Ram S. Katiyar

Nanoscientist

University of Puerto Rico, Río Piedras Campus

Picture of Ram Katiyar

Biography

Born in India, Katiyar obtained his Ph.D. Degree in Physics from the Indian Institute of Science, Bangalore in 1968. After completing his post-doctoral work in the area of ferroelectrics at the University of Ediburgh, he moved to the United States as an Assistant Professor of Physics at the University of Southern California in 1971. In August 1973, he joined the University of Campinas, Brazil as an associate professor of Physics and was promoted to full professor in 1980. He is presently serving as a Professor of Physics at the University of Puerto Rico, Rio Piedras Campus where he has been leading Advanced Materials Research Laboratory working in the area of nanocrystalline materials and thin films for energy, memory, and sensor applications. He ingeniously exploited Raman spectroscopy and other characterization tools to understand size:structure:property relationships in various family of nano-structured materials, namely ferroelectrics, multiferroics, semiconductors, and rechargeable Li ion battery materials. His immense contributions in this field are represented by his excellent publication record (over 500, at least 150 in the last 5 years) and citation of the works in the internationally recognized journals like Physical Review B, Physical Review Letters, Applied Physics Letters, Journal of Applied Physics, and Science.

Professor Katiyar's research group is presently working on six federally funded research projects including NSF-IFN Project involving fabrication and characterization of the above materials in thin film forms with potentials in energy, memory, and sensor applications. Some of these projects (and his patents) are leading into the testbed phase through collaborations with the Argonne National Laboratory and the State University of New York, Binghamton.

bio picture

Katiyar's current research projects.

Teams

Cluster III: Multifunctional Nanostructures

Phone

+1-787-764-0000 ext. 3581, 5188, 5187

Direct phone

+1-787-751-4210

Fax

+1-787-764-2571

E-mail

rkatiyar uprrp edu

Website

http://speclab.upr.edu/

Education

Publications

  1. R. S. Katiyar, A. Kumar, and I. Rivera, "Divide line between relaxor, diffused ferroelectric, ferroelectric and dielectric relaxation", Solid State communications, 149, 433 (2009)
  2. J. R. Calzada, R. S. Katiyar, N. M. Murari, S. P. Pavunny, and R. Thomas, "DyScO3 buffer layer for a performing Metal-Ferroelectric-Insulator-Semiconductor structure with multiferroic BiFeO3 thin film", Appl. Phys. Lett., (2009)
  3. R. S. Katiyar, O. Resto, and R. Singhal, "Effect of nanocrystallinity on the electrochemical performance of LiMn2O4 cathode", Journal of Renewable and Sustainable Energy, (2009)
  4. Y. Ishikawa, N. K. Karan, R. S. Katiyar, J. J. Saavedra-Arias, and R. Thomas, "First Principles Computations Studies: Structural and Electrochemical Behavior of Layered Cathode Materials", ECS Transaction, 16, 9 (2009)
  5. P. X. Feng, R. S. Katiyar, A. Kumar, and B. Yang, "Growth and characterization and Nanostructured ZnO films", J. Phys. D: Appl. Phys. , (2009)
  6. R. S. Katiyar, A. Kumar, and N. M. Murari, "Investigation of dielectric and electrical behavior in Pb(Fe0.66W0.33)0.50Ti0.50O3 thin films by impedance spectroscopy", Journal of Alloys and Compounds, 469, 433 (2009)
  7. R. S. Katiyar, A. Kumar, and I. Rivera, "Investigation of local structure of lead free relaxor Ba(Ti0.70Sn0.30)O3", Raman spectroscopy, (2009)
  8. R. S. Katiyar, S. B. Majumder, and S. Sivaprakash, "Investigations on 0.5Li(Ni0.8Co0.15Zr0.05)O2–0.5Li(Li1/3Mn2/3)O2 Cathode for Li Rechargeable Batteries", Journal of The Electrochemical Society, 156, A328 (2009)
  9. N. K. Karan, R. S. Katiyar, A. Kumar, R. Thomas, and M. S. Tomar, "Li-ion Rechargeable Batteries Based on LiFePO4: A comparative Study on the Nanostructured Composite Positive Electrode With Two Different Carbon Coating", ECS Transactions , 16, 143 (2009)
  10. R. S. Katiyar, A. Kumar, and I. Rivera, "Multiferroics Pb(Fe0.66W0.33)0.80Ti0.20O3 thin films: A room temperature relaxor ferroelectric and weak ferromagnetic", Material Science and Technology 2008 Conference and Exhibition Proceeding, (2009)
  11. H. Huhtinen, R. S. Katiyar, R. Palai, and J. F. Scott, "Observation of spin-glass-like behavior in SrRuO3 epitaxial thin Films", Physical Review B, 79, 104413 (2009)
  12. S. Dussan, R. S. Katiyar, W. Prellier, and M. K. Singh, "One-magnon light scattering and spin reorientation transition in epitaxially BiFeO3 thin films", Journ. Mag. Mag. Mat. (in press), (2009)
  13. A. S. Bhalla, R. Guo, N. K. Karan, R. S. Katiyar, and T. Maiti, "Raman spectral studies of Zr4+ rich BaZrxTi1-xO3 (0.5≤ x ≤1) phase diagram", Solid State communications, 149, 433 (2009)
  14. P. X. Feng, R. S. Katiyar, A. Kumar, N. Upia, and B. Yang, "Self assembled nanostructured ZnO on different substrates using the pulsed laser deposition technique", Journal of Phys D: Applied Physics, 42, 045415 (2009)
  15. S. Das, Y. Ishikawa, R. S. Katiyar, R. Katiyar, J. J. Saavedra-Aries, R. Singhal, M. S. Tomar, and M. J. Vilkas, "Spinel LiMn2-xNixO4 cathode materials for high energy density lithium ion rechargeable batteries", Journal of Renewable and Sustainable Energy, in press (2009)
  16. D. P. Abrahim, B. Balasubramanian, M. M. Furczonc, N. K. Karan, R. S. Katiyar, D. K. Pradhan, J. J. Saavedra-Aries, and R. Thomas, "Structural characteristics and electrochemical performance of layered Li[Mn0.5-xCr2xNi0.5-x]O-2 cathode materials", Journal of Power Sources, 187, 586 (2009)
  17. V. Gupta, R. S. Katiyar, H. Kumar-Yadav, and K. Sreenivas, "Structural studies and Raman spectroscopy of forbidden zone boundary phonons in Ni doped ZnO ceramics", J. Raman Spectroscopy (in press), (2009)
  18. R. S. Katiyar, R. E. Melgarejo, N. M. Murari, S. P. Pavunny, R. Thomas, and A. Winterman, "Structural, electrical and magnetic properties of chemical solution deposited Bi (Fe0.95Cr0.05)O3 thin films on platinized silicon substrates", J. Appl. Phys., (2009)
  19. R. S. Katiyar, W. Prellier, J. F. Scott, and M. K. Singh, "The Almeida–Thouless line in BiFeO3: is bismuth ferrite a mean field spin glass?", Journal of Physics: Condensed Matter , 21, 042202 (2009)
  20. H. M. Jang, R. S. Katiyar, W. Prellier, and M. K. Singh, "Anomalous magnetic ordering transition and induced Raman scattering in BiFeO3 thin films", Mat. Res. Soc. Sympo, 1034, 1034-K03-05 (2008)
  21. G. Catalan, S. Clark, R. S. Katiyar, R. Palai, S. Redfern, J. Robertson, H. Schmid, J. Scott, and P. Tissot, "Beta Phase and Beta-Gamma Metal-Insulator Transition of Multiferroic Bismuth Ferrite", Physical Review B, 77, 014110 (2008)
  22. R. S. Katiyar, J. F. Scott, and M. K. Singh, "Critical phenomena at the 140K and 200K magnetic phase transitions in BiFeO3", J. Phys.: Condens. Matter, 20, 322203 (2008)
  23. R. S. Katiyar, J. F. Scott, and M. K. Singh, "Critical slowing-down of spin fluctuations in BiFeO3", J. Phys.: Condens. Matter, 20, 425223 (2008)
  24. M. Correa, R. S. Katiyar, and A. Kumar, "Dielectric and Raman studies of La modified lead scandium niobate ceramics", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), 1, (2008)
  25. P. S. Dobal, R. S. Katiyar, T. Shripathi, O. N. Srivastava, and R. M. Yadav, "Effect of Growth Temperature on Bamboo-shaped Carbon-Nitrogen (C-N) Nanotubes Synthesized Using Ferrocene Acetonitrile Precursor", Nanoscale Res. Lett (Nano Express), (2008)
  26. R. Choudhary, R. S. Katiyar, D. K. Pradhan, and C. M. Tirado, "Effect of La/Mn substitution on electrical properties of BiFeO3 multiferroics", Engineering & Materials Science Indian Journal, 15 [2], 87 (2008)
  27. N. K. Karan, R. S. Katiyar, N. M. Murari, D. K. Pradhan, K. J. Raju, J. J. Saavedra-Arias, K. Sudheendran, and R. Thomas, "Effect of Sr substitution on tenability and dielectric properties in Pb(Zr0.50Ti0.50)O3 thin films fabricated by chemical solution deposition", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), 3, (2008)
  28. J. G. Burgos, R. S. Katiyar, R. Singhal, and M. S. Tomar, "Electrochemical performance of ZnO-coated LiMn1.5Ni0.5O4 cathode material", J. Power Source , 183, 334 (2008)
  29. R. S. Katiyar, A. Kumar, and N. Ortega, "Enhanced polarization and dielectric properties of Pb(Zr1-xTix)O3 thin films", J.App. Phys., 104, 074114 (2008)
  30. R. S. Katiyar, A. Kumar, N. M. Murari, and R. Thomas, "Fabrication of BiFeO3 capacitor structures with reduced leakage current", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), 2, (2008)
  31. R. S. Katiyar, A. Kumar, S. Lushnikov, C. Rinaldi, and T. A. Shaplygina, "Glass-like state in PbFe1/2Nb1/2O3 single crystal", App. Phys. Lett., 93, 232902 (2008)
  32. N. K. Karan, R. S. Katiyar, M. Perez, J. J. Saavedra-Arias, and R. Thomas, "High energy density MIM capacitors with Ba[(Ni½,W½)0.1Ti0.9]O3 thin films", Appl. Phys. Lett., 92, 012903 (2008)
  33. R. S. Katiyar, A. Kumar, N. M. Murari, and R. Thomas, "Improved dielectric properties of chemical solution deposited multiferroic BiFeO3 /Ba0.25Sr0.75TiO3 hetero-structured thin films on platinized silicon substrates", Appl. Phy. Lett., 92, 132904 (2008)
  34. J. G. Burgose, R. S. Katiyar, R. Singhal, and M. S. Tomar, "LiMn1.8Mg0.2O4 spinel cathode material for Li ion rechargeable batteries", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), , 2, (2008)
  35. V. Gupta, R. S. Katiyar, H. Kumar-Yadav, and K. Sreenivas, "Low-frequency zone-boundary phonons in Li doped ZnO ceramics", J. App. Phys., 104, 053507 (2008)
  36. N. K. Karan, R. S. Katiyar, R. Melgarejo, N. M. Murari, R. Palai, D. K. Pradhan, J. J. Saavedra-Arias, and R. Thomas, "Metal-ferroelectric-insulator-semiconductor (MFIS) devices based on DyScO3 buffer layer and ferroelectric Bi3.25Nd0.75Ti3O12 thin film", ECS Transactions, 13, 363 (2008)
  37. K. C. James-Raju, R. S. Katiyar, M. K. Singh, and K. Sudheendran, "Microwave dielectric and Raman Scattering studies on Bismuth Zinc Niobate thin films", J. App. Phys., 104, 104104 (2008)
  38. R. S. Katiyar, J. F. Scott, and M. K. Singh, "New magnetic phase transition in BiFeO3", J. Phys.: Condens. Matter, 20, 252203 (2008)
  39. N. K. Karan, R. S. Katiyar, A. Kumar, N. M. Murari, R. Palai, J. F. Scott, and M. K. Singh, "New Phase Transitions in Perovskite Oxides: BiFeO3, SrSnO3, and Pb(Fe2/3W1/3)1/2Ti1/2O3, ", Journal of American Ceramic Society, 91, 1762 (2008)
  40. M. Correa, R. S. Katiyar, A. Kumar, and C. Rinaldi, "Observation of magnetoelectric coupling in glassy epitaxial Pb(Fe0.5Nb0.5)O3 thin films", Apl. Phyis, Lett., 93, 192907 (2008)
  41. P. Bhattacharya, J. Duque, W. Iwamoto, R. S. Katiyar, P. G. Pagliuso, C. Rettori, and K. Samantha, "Optical and magnetic properties of Zn0.9-xCo0.1O:Alx thin films", Solid State Communications, 147, 305 (2008)
  42. N. K. Karan, R. S. Katiyar, M. Perez, D. Pradhan, J. Saavedra, and R. Thomas, "Phase transition and dielectric tunability of chemical solution deposited (Pb0.35Sr0.65)(Zr0.5Ti0.5)O3 thin films on Pt/ZrO2/SiO2/Si substrates", Mat. Res. Soc. Sympo, 1034, 1034-K10-40 (2008)
  43. S. Dussan, R. S. Katiyar, and M. K. Singh, "Phonon anomalies in multiferroic BiFeO3 epitaxial thin films with rhombohedral (R3c) symmetry", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), 2, (2008)
  44. H. C. Gupta, H. M. Jang, R. S. Katiyar, and M. K. Singh, "Polarized Raman scattering and lattice dynamics of antiferromagnetic NdFeO3", Journal of Raman Spectroscopy, 39, 842 (2008)
  45. R. S. Katiyar, A. Kumar, and N. M. Murari, "Probing of ferroelectric phase transition in sol-gel derived polycrystalline bismuth ferrite thin films", Journal of Raman Spectroscopy, 39 [9], 1262 (2008)
  46. S. Dussan, R. S. Katiyar, G. L. Sharma, and M. K. Singh, "Raman scattering measurements of phonon anhormonicity in CuAlO2 thin films", J. App. Phys., 104, 113503 (2008)
  47. V. Gupta, R. S. Katiyar, H. Kumar-Yadav, J. F. Scott, and K. Sreenivas, "Raman spectroscopy and dielectric studies of multiple phase transition in ZnO:Ni", App. Phys. Lett., 92, 122908 (2008)
  48. R. S. Katiyar, R. Palai, S. P. Pavunny, and R. M. Valdes, "Raman spectroscopy and magnetoelectric properties of laser ablated La and Cr doped BiFeO3 thin films", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), , 2, (2008)
  49. P. Bhattacharya, R. S. Katiyar, K. Samanta, and D. Varshney, "Self-assembled ZnO nanostructure for field-emission devices", Journal of Nano Research, 4, 19 (2008)
  50. M. Correa, R. S. Katiyar, and A. Kumar, "Size and strain effects on relaxor ferroelectric properties of Pb(ScNb(1-x)/2Tax/2)O3 thin films and nanoceramics", Integrated Ferroelectrics, 100, 297 (2008)
  51. N. Baskaran, N. K. Karan, R. S. Katiyar, D. K. Pradhan, and R. Thomas, "Solid polymer electrolytes based on polythylene oxide and lithium trifluoro-methane sulfanote (PEO-LiCF3SO3): Ionic conductivity and dielectric relaxation", State Ionic, 179, 689 (2008)
  52. N. K. Karan, R. S. Katiyar, A. Kumar, R. E. Melgarejo, D. K. Pradhan, J. J. Saavedra-Arias, and R. Thomas, "Structural and electrochemical characterization of solution derived LiMn0.5Ni0.5O2 as positive electrode for Li-ion rechargeable batteries", Electrochem. Solid State Lett, 11, A135 (2008)
  53. P. X. Feng, R. S. Katiyar, A. Kumar, and B. Yang, "Structural degradation and optical property of nanocrystalline ZnO films grown on Si (100)", Applied Physics Letters , 92, 233112 (2008)
  54. S. Dussan, R. S. Katiyar, G. L. Sharma, and M. K. Singh, "Structural properties of multiferroic CuFeO2 thin films prepared by RF sputtering", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), 2, (2008)
  55. R. S. Katiyar, "Structural, dielectric, electric and ferroelectric properties of different routes derived of Ba1-xSrxTiO3 (BSTO) ceramics", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), , 1, (2008)
  56. R. S. Katiyar, R. Martínez, and R. Palai, "Structural, dielectric, electric and ferroelectric properties of different routes derived of Ba1-xSrxTiO3 (BSTO) ceramics", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), 1, (2008)
  57. R. S. Katiyar, A. Kumar, and N. Ortega, "Structural, dielectric, electrical, and magnetic properties of multiferroic BaTiO3-NiFe2O4 composite ceramic", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), 2, (2008)
  58. S. Dussan-Devia, R. S. Katiyar, C. Rinaldi, G. L. Sharman, and M. K. Singh, "Synthesis and characterization of Fe-doped In2O3 nanoparticles", Mater. Res. Soc. Sympo.Proc., 1074, 1074-I10-40 (2008)
  59. R. S. Katiyar, R. Martinez, and R. Palai, "Synthesis and characterization of Pb(Fe1/2Ta1/2)O3", Mater. Res. Soc. Symp. Proc. , 1034, K10-48 (2008)
  60. N. K. Karan, R. S. Katiyar, A. Kumar, S. Nieto, D. K. Pradhan, J. J. Saavedra-Aries, and R. Thomas, "Synthesis and electrochemical properties of Li(Ni0.8Co0.1Mn0.1)O2 cathode material: Ex situ structural analysis by Raman scattering and X-ray diffraction at various stages of charge-discharge process", Journal of Power Sources, 183, 761 (2008)
  61. V. Gupta, R. S. Katiyar, H. Kumar-Yadav, and K. Sreenivas, "Temperature dependence of the dynamics of zone boundary phonons in ZnO:Li", J. App. Phys., 104, 113523 (2008)
  62. P. Ehrhart, N. K. Karan, R. S. Katiyar, N. M. Murari, J. J. Saavedra-Arias, R. Thomas, and R. Waser, "Thin films of high-k dysprosium scandate prepared by metal organic chemical vapor deposition for metal-insulator-metal capacitor applications", Solid State Communications, 147, 332 (2008)
  63. M. Jain, N. K. Karan, R. S. Katiyar, H. Wang, and J. Yoon, "Tunable lead strontium titanate thin films by sol-gel technique", 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF), , 3, (2008)
  64. P. B. Amama, T. S. Fisher, R. S. Katiyar, B. Sundarakannan, and D. Zemlyanov, "XPS and Raman characterization of single-walled carbon nanotubes grown from pretreated Fe2O3 nanoparticles", J. Phys. D: Appl. Phys, 41, 165306 (2008)
  65. H. M. Jang, R. S. Katiyar, W. Prellier, and M. K. Singh, "Anomalous low-temperature magnetic ordering induced spin-phonon coupling in epitaxial BiFeO3 thin films", Appl. Phys. Lett. Submitted (2009),
  66. R. S. Katiyar, A. Kumar, N. Ortega, and C. Rinaldi, "Dynamic Temperature Dependent Magneto-electric Coupling in Pb(Zr,Ti)O3/CoFe2O4 Layered nanostructure", Phys. Rev. B,
  67. K. Asmar, R. Katiyar, R. S. Katiyar, and R. Singhal, "Electrochemical characterization of LiMn1.5Ni0.4Cr0.1O4 cathode material for high energy density Li ion battery", J. Electrochemical Soc.,
  68. K. Asmar, R. Katiyar, R. S. Katiyar, and R. Singhal, "Ex-situ XPS characterization of LiMn1.5Ni0.4Cr0.1O4 cathode materials at various charge and discharge states", Electrochemical and solid state letters,
  69. R. S. Katiyar, A. Kumar, and I. Rivera, "Investigation of dielectric, electrical and optical properties of Pb1/2Sr1/2TiO3 ceramics", Physica B, 403, 2423
  70. R. S. Katiyar, R. Katiyar, and R. Singhal, "LiMn1.8Mg0.2O4 spinel cathode materials for high rate capability Li ion rechargeable batteries", J. Phys. And Chem. of Solids,
  71. K. Asmar, R. Katiyar, R. S. Katiyar, and R. Singhal, "LiMn1.97Co0.03O4 cathode material for Li ion rechargeable batteries", . Power Sources,
  72. K. Asmar, R. Katiyar, R. S. Katiyar, and R. Singhal, "LiMn2-xCuxO4 (0.1 ≤ x ≤ 0) cathode materials for high energy desity Li ion rechargeable batteries", Journal of Power Sources,
  73. S. Dussan, R. S. Katiyar, and M. K. Singh, "Localized structural analysis Fe-doped In2O3 nanoparticles by using Raman spectroscopy", J. Raman Spectroscopy (Submitted) 2009,
  74. R. Blinc , R. S. Katiyar, A. Kumar, J. F. Scott, and G. L. Sharma, "Magnetic control of large room-temperature polarization", Physical Review B,
  75. D. P. Abraham, . Balasubramanian, M. M. Furczonc, N. K. Karan, R. S. Katiyar, and R. Thomas, "Morphology, Structure and Electrochemistry of solution-derived LiMn0.5-xCr2xNi0.5-xO2 for Li ion cells", J. Electrochem. Soc.,
  76. N. K. Karan, R. S. Katiyar, N. M. Murari, J. J. Saavedra-Arias, and R. Thomas, "Preferential grain growth and improved fatigue endurance in Sr substituted PZT thin films on Pt(111)/TiOx/SiO2/Si substrates", J Alloys and compounds,
  77. R. S. Katiyar, R. E. Melgarejo, N. M. Murari, S. P. Pavunny, and R. Thomas, "Rare-earth scandate insulating buffer layer and rare-earth substituted Aurivillius Bi4Ti3O12 ferroelectric for Metal-Ferroelectric-Insulator-Semiconductor diode", Appl. Phys. Lett,
  78. R. S. Katiyar, A. Kumar, C. Rinaldi, and J. F. Scott, "Strain induced artificial multiferroicity in Pb(Zr0.53Ti0.47)O3 / Pb(Fe0.66W0.33)O3 layered nanostructure at ambient temperature", Material Science,
  79. G. E. Bonilla, R. Choudhary, R. S. Katiyar, D. K. Pradhan, and C. M. Tirado, "Structural and Electrical Characteristics of Sr(Fe2/3W1/3)O3 Nanoceramics", Materials Charactirazation,
  80. A. Dixit and R. S. Katiyar, "Structural and Electrical Properties of Lanthanum Substituted Barium Titinate Thin Films", Applied Physics,
  81. N. K. Karan, R. S. Katiyar, A. Kumar, S. B. Majunder, J. J. Saavedra-Aries, M. K. Singh, R. Thomas, and M. S. Tomar, "Structural and electrochemical characterization of pure LiFePO4 and nano composite C- LiFePO4 cathodes for Li ion rechargeable batteries", Journal of Nanotechnology ,
  82. R. S. Katiyar, R. E. Melgarejo, N. M. Murari, S. P. Pavunny, and R. Thomas, "Structural, electrical and magnetic properties of BiFe1-xTixO3 thin films prepared using chemical solution deposition", J. Appl. Phys. ,
  83. S. D. Devia, R. S. Katiyar, C. Rinaldi, and M. K. Singh, "Synthesis and structural, optical, magnetic properties of Ni-doped In2O3 nanoparticles", J. App. Phys (Submitted) 2009,

Grants

  1. F. M. Aliev, C. R. Cabrera, L. F. Fonseca, K. H. Griebenow, A. J. Hernández, Y. Ishikawa, R. S. Katiyar, M. M. Martínez, A. R. Mayol, G. Morell, W. Otaño, R. G. Raptis, and B. R. Weiner. Center for Advanced Nanoscale Materials (CANM) NASA University Research, National Aeronautics and Space Administration, URC, 5 years, October 2008, Multiple PIs, Approved, $6,000,000.
  2. O. Auciello, S. Bader, D. Bonnell, S. Desu, L. F. Fonseca, M. Gómez, S. Hong, Y. Ishikawa, R. S. Katiyar, V. Makarov, A. R. Mayol, G. Morell, W. Otaño, R. Palai, O. J. Perales, A. Petford-Long, R. Ramesh, A. Rastogi, R. Thomas, and M. S. Tomar. Development and Understanding of Multifunctional Nanostructures for Spintronics and Magnetoelectrics Applications, United States Department of Energy, EPSCoR, 3 years, September 2008, Multiple PIs, Approved, $2,245,000.
  3. C. R. Cabrera, Y. Ishikawa, R. S. Katiyar, G. Morell, and R. G. Raptis. Space Exploration Enabling Power Systems: Partnership to Develop the Fundamental Science at UPR and Perform the Corresponding Proof-of-Concept at NASA GRC, National Aeronautics and Space Administration, EPSCoR, 3 years, October 2007, Multiple PIs, Approved, $1,350,000.
  4. P. Bhattacharya, R. S. Katiyar, S. Majumder, and C. Rinaldi. Design and development of Magnetoelectric composites for multifunctional devices, United States Department of Defense, DEPSCoR, 4 years, June 2006, Multiple PIs, Approved, $533,620.
  5. R. S. Katiyar. Design and development of Novel nano-structured Active materials for multifunctional Applications, United States Department of Defense, DoD-HSI, 4 years, January 2006, Single PI, Approved, $357,000.
  6. R. S. Katiyar. nano-structured Spintronic materials for novel magneto-electronics devices, United States Department of Defense, DoD, 4 years, July 2005, Single PI, Approved, $205,000.

Presentations

  1. K. Asmar , R. S. Katiyar, M. E. Rivera-Ramos, and R. Singhal (May 2009) "High Energy Density Cathode Materials for Li Ion Rechargeable " in 215th ECS Meeting.
  2. D. Abraham, M. Balasubramanian, D. S. Belen-Cordero, M. Furczon, N. Karan, R. S. Katiyar, and R. Thomas (May 2009) "Structural and Electrochemical Performance of Layered Li(Mn0.5-xCr2xNi0.5-x)O2 Cathode Materials" in 215th ECS Meeting.
  3. R. S. Katiyar, A. Kumar, R. Thomas, and M. Tomar (May 2009) "Synthesis of Carbon Treated and Untreated LiFePO4: A Comparative Study on the Structural, Morphological and Electrochemical Properties" in 215th ECS Meeting.
  4. R. S. Katiyar, R. K. Katiyar, R. Singhal, and R. Valentin (April 2009) "High energy density cathode materials for rechargeable Li ion power batteries" in Materials Research Society Spring Meeting.
  5. R. Calsada, R. S. Katiyar, R. Martínez, S. P, and R. Palai (April 2009) "Microstructure Analysis and Multiferroic Properties of La0.67Sr0.33MnO3/Ba0.7Sr0.3TiO3 Superlattices Grown on (001) MgO" in Materials Research Society Spring Meeting.
  6. R. S. Katiyar, A. Kumar, R. Matínez, and D. A. Sanchez (April 2009) "Room Temperature Single Phase Multiferroics Pb{(Zr1/2Ti1/2)x(Fe1/2Ta1/2)1-x} Ceramics" in Materials Research Society Spring Meeting.
  7. M. Correa, R. S. Katiyar, and A. Kumar (April 2009) "Strain Effects on Relaxor Ferroelectric Properties of PbSc0.5Nb(1-x)/2Tax/2O3 Thin Films and Nanoceramics" in Materials Research Society Spring Meeting.
  8. S. Dussan, R. S. Katiyar, and M. K. Singh (March 2009) "5. Phonon anomalies in multiferroic BiFeO3 epitaxial thin films with rhombohedral (R3c) symmetry" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  9. S. Dussan, R. S. Katiyar, and M. K. Singh (March 2009) "Multiferroic Properties of Artificially Designed Perovskite-Spinel Heterostructures" in APS March Meeting.
  10. R. S. Katiyar, A. Kumar, and D. A. Sanchez (March 2009) "Single Phase Multiferroics Pb{(Zr1/2Ti1/2)x(Fe1/2Ta1/2)1-x} Thin Films" in APS March Meeting.
  11. R. S. Katiyar (February 2009) "Investigations on Magnetoelectric multiferroics" in Williamsburg Workshop on Fundamental Physics of ferroeelctrics.
  12. R. Katiyar, R. S. Katiyar, R. Singhal, and R. Valentin (December 2008) "Electrochemical characterization of LiMn2-xCrxO4 cathode materials for high energy density Li Ion rechargeable batteries" in Materials Research Society Fall Meeting.
  13. S. Dussan, R. S. Katiyar, G. L. Sharma, and M. K. Singh (December 2008) "Raman scattering studies of anharmonic contribution to phonon in p type CuAlO2 thin films" in Materials Research Society Fall Meeting.
  14. R. E. Melgarejo, R. S. Katiyar, N. M. Murari, J. J. Saavedra-Arias, and R. Thomas (December 2008) "Dielectric and magnetic properties of BiFe1-xNdxO3 and BiFe0.95Li0.05O3," in Materials Research Society Fall Meeting.
  15. R. S. Katiyar and A. Kumar (December 2008) "Epitaxial multiferroic relaxor Pb(Fe2/3W1/3)O3, " in Materials Research Society Fall Meeting.
  16. S. Dussan, R. S. Katiyar, and M. K. Singh (December 2008) "Growth of self-assembled CoFe2O4-BiFeO3 thin films by pulsed laser deposition" in Materials Research Society Fall Meeting.
  17. R. S. Katiyar, R. K. Katiyar, A. Kumar, J. Lopez, P. Mirchandani, and I. Rivera (December 2008) "Investigation of dielectric and electrical properties of lead free relaxor Ba(Ti,Sn)O3" in Materials Research Society Fall Meeting.
  18. R. S. Katiyar, A. Kumar, and R. Singhal (December 2008) "Magnetic behavior of Co doped ZnO nanoparticles" in 53rd Annual conference on magnetism and magnetic materials.
  19. R. Calzada, R. S. Katiyar, R. Martinez, R. Palai, and S. Pavunny (December 2008) "Magneto-electrical properties of La2/3Sr1/3MnO3 /BiFeO3 Heterostructures" in Materials Research Society (MRS), Fall Meeting .
  20. R. Calasada, R. S. Katiyar, R. Martinez, R. Palai, and S. Pavuuny (December 2008) "Magnetoelectric Properties of Pulsed Laser Deposited Ferroelectric/Ferromagnetic Heterostructures" in Materials Research Society (MRS), Fall Meeting .
  21. R. S. Katiyar, A. Kumar, and N. Ortega (December 2008) "Nanostructurated thin films of Pb(Zr,Ti)O3/CoFe2O4 multiferroics" in Materials Research Society Fall Meeting.
  22. S. Dussan, R. S. Katiyar, W. Prellier, and M. K. Singh (December 2008) "One-magnon light scattering and spin reorientation transition in epitaxially BiFeO3 thin films" in Materials Research Society Fall Meeting.
  23. M. Correa, R. S. Katiyar, and A. Kumar (December 2008) "Studies on the dielectric and optical properties of epitaxial multiferroic Pb(Fe0.5Nb0.5)O3 thin films" in Materials Research Society Fall Meeting.
  24. S. Dussan-Devia, R. S. Katiyar, W. Prellier, and M. K. Singh (November 2008) "Anomalous low-temperature magnetic ordering induced magnon light scattering and spin phonon coupling in epitaxial BiFeO3 thin films" in 53rd Annual conference on magnetism and magnetic materials.
  25. S. Dussan-Devia, R. S. Katiyar, G. L. Sharma, and M. K. Singh (November 2008) "Synthesis and characterization of Ni-doped In2O3 nanoparticles" in 53rd Annual conference on magnetism and magnetic materials.
  26. N. Karan, R. S. Katiyar, A. Kumar, D. Pradhan, J. Saavedra-Arias, and R. Thomas (October 2008) "Effect of annealing conditions on the structural and electrochemical behavior of Li(Mn0.5-xCr2xNi0.5-x)O2 layered cathodes" in 214th ECS Meeting.
  27. N. Karan, R. S. Katiyar, D. Pradhan, J. Saavedra-Arias, and R. Thomas (October 2008) "Structural and electrochemical studies of solution derived xLi2MnO3-(1-x)Li(Mn0.5Ni0.5)O2 cathodes" in 214th ECS Meeting.
  28. Y. Ishikawa, N. Karan, R. S. Katiyar, A. Kumar, J. Saavedra-Arias, and R. Thomas (October 2008) "Structural behavior of layered cathode materials and first principles computations studies" in 214th ECS Meeting.
  29. R. S. Katiyar and R. Singhal (October 2008) "Synthesis and characterization of LiMn2-x-yCoxNiyO4 cathode materials for high energy density Li ion rechargeable batteries" in 214th ECS Meeting.
  30. N. Karan, R. S. Katiyar, A. Kumar, J. Saavedra-Arias, R. Thomas, and M. Tomar (October 2008) "The effect of the particle size on electrochemical properties of carbon coated LiFePO4" in 214th ECS Meeting.
  31. N. K. Karan, R. S. Katiyar, A. Kumar, D. K. Pradhan, J. J. Saavedra-Arias, and R. Thomas (October 2008) "36. Structural and electrochemical properties of solution derived Li( Mn0.475Cr0.05Ni0.475)O2 layered cathodes" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  32. N. K. Karan, R. S. Katiyar, D. K. Pradhan, J. J. Saavedra-Arias, and R. Thomas (October 2008) "Chemical solution deposited Ba[(Ni1/2W1/2)0.1Ti0.9]O3 thin films for high energy density capacitors applications" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  33. N. K. Karan, R. S. Katiyar, N. M. Murari, D. K. Pradhan, J. J. Saavedra-Arias, and R. Thomas (October 2008) "Effect of A-site Sr substitution on the orientation of Pb(Zr0.5,Ti0.5)O3 thin films on Pt(111)/TiOx/SiO2/Si substrates" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  34. R. S. Katiyar, R. E. Melgarejo, N. M. Murari, and R. Thomas (October 2008) "Ferroelectric and magnetic properties of chemical solution deposited Bi(Fe0.9Ti0.05Co0.05)O3 thin films" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition.
  35. R. S. Katiyar, N. M. Murari, and R. Thomas (October 2008) "Leakage current reduction and improved ferroelectric properties of chemical solution deposited Bi (Fe, M)O3 (M=Ti and Cr) thin films" in MS&T08 - Material Science and Technology 2008 Conference and Exhibition.
  36. R. S. Katiyar, A. Kumar, and I. Rivera (October 2008) "Multiferroics Pb(Fe0.66W0.33)0.80Ti0.20O3 thin films: A room temperature relaxor ferroelectric and weak ferromagnetic" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  37. M. Correa, R. S. Katiyar, A. Kumar, and I. Rivera (October 2008) "Multiferroics phenomenon in Pb(B’B’’)O3 relaxor thin films and ceramics" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition.
  38. R. S. Katiyar, R. Palai, J. F. Scott, and M. J. Singh (October 2008) "Phase transition in multiferroic BiFeO3 thin films" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  39. R. S. Katiyar, A. Kumar, and S. Lushnikov (October 2008) "Polarized Raman spectroscopy study of relaxor-ferroelectric PbSc0.5Nb0.5O3 single crystal" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  40. R. S. Katiyar, N. M. Murari, and R. Thomas (October 2008) "Pt/BiFeO3/DyScO3/Si MFIS structure for FERAM application" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  41. N. K. Karan, R. S. Katiyar, A. Kumar, D. . Pradhan, J. J. Saavedra-Arias, and R. Thomas (October 2008) "Structural and electrochemical properties of LiMn0.5Ni0.5-xCoxO2 (x=0.2-0.3): A cathode material for secondary lithium-ion batteries" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  42. R. S. Katiyar, P. Shojan, and M. Singh (October 2008) "Structural, magnetic and dielectric properties of multiferroic CuFeO2" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition.
  43. R. S. Katiyar and M. Singh (July 2008) "Phase transition studies in multiferroic BiFeO3 thin films using Raman spectroscopy" in ICMR Summer School on Multiferroic Materials and Beyond.
  44. R. S. Katiyar, A. Kumar, and N. Ortega (June 2008) "Nanostructured thin films of Pb(Zr,Ti)O3/CoFe2O4 multiferroics" in 1st International Conference from Nanoparticles & Nanomaterials to Nanodevices & Nanosystem (IC4N-2008).
  45. R. S. Katiyar, A. Kumar, and N. Ortega (June 2008) "2008-30 Epitaxially grown multiferroics Pb(Zr,Ti)O3/CoFe2O4 layered nanostructure" in International Symposium on Integrated Ferroelectrics (ISIF).
  46. R. S. Katiyar, K. Kumar, P. Mirchandani, and I. Rivera (June 2008) "Studies of magnetic and ferroelectric properties of Pb(Fe0.67W0.33)0.80 thin films at ambient temperature" in International Symposium on Integrated Ferroelectrics (ISIF).
  47. R. S. Katiyar, A. Kumar, and I. Rivera (June 2008) "Divide line between relaxor, ferroelectric and dielectric relaxation" in International Symposium on Integrated Ferroelectrics (ISIF).
  48. R. S. Katiyar, J. F. Scott, M. K. Singh, M. P. Singh, and P. Wilfred (May 2008) "Spin glass behavior in BiFeO3 single crystal" in Europian Materials Research Sociaty.
  49. N. K. Karan, R. S. Katiyar, A. Kumar, J. Saavedra-Arias, M. S. Thomar, and R. Thomas (May 2008) "Carbon coated nano-crystalline LiFePO4 cathodes for Li-ion rechargeable batteries" in 213th ECS Meeting.
  50. N. K. Karan, R. S. Katiyar, D. K. Pradhan, and R. Thomas (May 2008) "Dielectric properties of nanocomposite polymer electrolytes based on Polyethylene oxide and organically modified Na montmorillonite" in 213th ECS Meeting.
  51. R. S. Katiyar, S. B. Majumder, J. Saavedra, and S. Sivaprakash (May 2008) "Electrochemical and structural investigation of xLi[Li0.33Mn0.66]O2(1-x)Li[Ni0.8Co0.15Zr0.05]O2 (0.0x1.0) composite layered oxide cathode for rechargeable lithium ion batteries" in 213th ECS Meeting.
  52. N. K. Karan, R. S. Katiyar, R. Melgarejo , D. K. Pradhan, J. Saavedra-Arias, and R. Thomas (May 2008) "Metal-ferroelectric-insulator-silicon (MFIS) devices based on DyScO3 buffer layer and Bi3.25Nd0.75Ti3O12 ferroelectrics" in 213th ECS Meeting.
  53. N. K. Karan, R. S. Katiyar, A. Kumar, J. Saavedra-Arias, and R. Thomas (May 2008) "Structural analysis of layered Li(Ni0.9-xCoxMn0.1)O2 cathode material at various stages of electrochemical process" in 213th ECS Meeting.
  54. N. K. Karan, R. S. Katiyar, A. Kumar, D. K. Pradhan, J. J. Saavedra-Arias, and R. Thomas (May 2008) "Structural and electrochemical studies of chemical solution derived Li(Mn0.5-xCr2xNi0.5-x)O2 layared cathodes" in 213th ECS Meeting.
  55. R. S. Katiyar, G. L. Sharma, and M. K. Singh (March 2008) "Magnetic and structural properties of p type magnetic semiconductor CuAlO2 prepared by rf sputtering" in MRS Spring meeting.
  56. S. Dussan-Devia and R. S. Katiyar (March 2008) "Synthesis and characterization of Fe-doped In2O3 nanoparticles" in MRS Spring meeting.
  57. R. S. Katiyar and R. Singhal (March 2008) "Grain size effect on the electrochemical performence of Li ion rechargeable batteries in nanocrystalline LiMn2O4 cathode materials" in 213th ECS Meeting.
  58. R. S. Katiyar, M. K. Singh, and P. Wilfrid (March 2008) "Anomalous low temperature magnetic ordering and spin phonon coupling in BiFeO3 thin films" in APS March Meeting.
  59. N. K. Karan, R. S. Katiyar, R. Melgarejo, D. K. Pradhan, J. Saavedra-Arias, and R. Thomas (March 2008) "MIS and MFIS devices: DyScO3 as a gate-oxide and buffer-layer" in APS March Meeting.
  60. R. S. Katiyar, A. Kumar, and N. Ortega (March 2008) "Multilayer Pb(Zr,Ti)O3/CoFe2O4 epitaxialy thin films" in APS March Meeting.
  61. N. K. Karan, R. S. Katiyar, J. F. Scott, and M. K. Singh (March 2008) "New phase transition in ceramic SrSnO3: Raman scattering and differential thermal analysis" in APS March Meeting.
  62. M. Correa, R. S. Katiyar, and A. Kumar (March 2008) "Strain induced relaxor behavior in PbSc0.50Nb0.25Ta0.25O3 thin films: A comparison with the nanoceramics" in APS March Meeting.
  63. R. S. Katiyar, R. Melgarejo, N. M. Murari, and R. Thomas (March 2008) "Structural, electrical and magnetic properties of Bi(FexTi1-x)O3 thin films prepared by chemical solution deposition" in APS March Meeting.
  64. R. S. Katiyar, A. Kumar, and N. Ortega (February 2008) "3. Structural, dielectric, electrical and magnetic propeties of multiferroic BaTiO3-NiFe2O4 composite ceramic" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  65. S. Dussan, R. S. Katiyar, G. L. Sharma, and M. K. Singh (February 2008) "4. Structural properties of multiferroic CuFe(1-x)AlxO2 (x=0.0-0.1) thin films prepared by rf sputtering" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  66. S. Dussan, R. S. Katiyar, G. L. Sharma, and M. K. Singh (February 2008) "6. Anomalous magnetic ordering transition and induced Raman Scattering in BiFeO3 thin films" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  67. M. Correa, R. S. Katiyar, and A. Kumar (February 2008) "Dielectric and Raman studies of La modified lead scandium niobate ceramics" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  68. N. K. Karan, R. S. Katiyar, N. M. Murari, J. Saavedra-Arias, and R. Thomas (February 2008) "Effect of Sr substitution on tunability of (Pb0.35Sr0.65)(Zr0.5Ti0.5)O3" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  69. R. S. Katiyar, N. M. Murari, and R. Thomas (February 2008) "Fabrication of BiFeO3 capacitor structure with reduced leakage current" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  70. J. Burgos, R. S. Katiyar, R. Singhal, and M. Tomar (February 2008) "LiMn1.8Mg0.2O4 spinel cathode material for Li ion rechargeable batteries" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  71. S. Dussan, S. Dussan, R. S. Katiyar, G. L. Sharma, and M. K. Singh (February 2008) "Magnetic and structural properties of multiferroic CuFeO2 prepared by rf sputtering" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  72. R. S. Katiyar, R. Martinez, R. Palai, S. Pavuuny, and S. Singh (February 2008) "Observation of structural Phase transition in La-doped multiferroic BiFeO3 thin films " in International Symposium on Applied Ferroelectrics (ISAF).
  73. R. S. Katiyar, R. Palai, and H. Schmid (February 2008) "Polarized Raman scattering and magnetic properties of ferroelectric single domain crystal and thin film " in International Symposium on Applied Ferroelectrics (ISAF).
  74. R. S. Katiyar, R. Palai, S. P. Pavunny, and R. M. Valdes (February 2008) "Raman spectroscopy and magnetoelectric properties of laser ablated La and Cr doped BiFeO3" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  75. R. S. Katiyar, R. Martinez, and R. Palai (February 2008) "Structural, dielectric, electrical, and ferroelectric properties of Ba1-xSrxTiO3 ceramics synthesized by different routes " in International Symposium on Applied Ferroelectrics (ISAF),.
  76. R. S. Katiyar, R. Martinez, and R. Palai (February 2008) "Structural, dielectric, electrical, and ferroelectric properties of Ba1-xSrxTiO3 ceramics synthesized by different routes" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  77. M. Jain, N. K. Karan, R. S. Katiyar, H. Wang, and J. Yoon (February 2008) "Tunable lead strontium titanate thin films by sol-gel technique" in 17thInternational Symposium on Applications of Ferroelectrics (ISAF).
  78. R. S. Katiyar and M. K. Singh (February 2008) "Phase transition in BiFeO3 thin films by using Raman spectroscopy" in Fundamental Physics of Ferroelectric 2008 workshop.
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