Ram S. Katiyar

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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.

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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. N. Choudhary, R. S. Katiyar, D. K. Pradhan, and C. M. Tirado, "Effect of La/Mn substitution on electrical properties of BiFeO3 multiferroics", Indian Journal of Engineering & Materials Science (2008)
  2. R. Choudhury, R. S. Katiyar, D. Pradhan, and C. Rinaldi, "Effect of Mn substitution on electrical and magnetic properties of BiFeO3", Journal of Applied Physics, (2008)
  3. S. L. Katar, R. S. Katiyar, C. Marín, G. Morell, and R. Singhal, "Electrochemical properties of a prototype battery using LiMn1.5Ni0.46Rh0.04O4 cathode and single walled carbon nanotubes anode", Nanotechnology, (2008)
  4. N. K. Karan, R. S. Katiyar, M. Perez, J. Saavedra-Arias, and R. Thomas, "High energy density MIM capacitors with Ba[(Ni1/2W1/2)0.1Ti0.9]O3 thin films", Apl. Phyis, Lett. (2008)
  5. P. Bhattacharya, R. S. Katiyar, A. Kumar, S. B. Majunder, and N. Ortega, "Impedance spectroscopic studies of the Pb(Zr,Ti)O3-CoFe2O4 layered thin films", Physics Review B, 77, 14111 (2008)
  6. R. S. Katiyar, A. Kumar, F. Mendoza, and I. Rivera, "Investigation of electrical and optical properties of Pb1/2Sr1/2TiO3 nano-ceramics", J. App. Phyics. D (2008)
  7. R. S. Katiyar, A. Kumar, and I. Rivera, "Multiferroic Pb(Fe0.66W0.33)0.80Ti0.20O3 thin films: A room temperatura relaxor ferroelectric and weak ferromagnetic", Apl. Phyis, Lett., (2008)
  8. H. M. Jang, N. K. Karan, R. S. Katiyar, J. F. Scott, and M. K. Singh, "New phase transition in SrSnO3: Raman scattering analysis and differential thermal analysis", J. Phys: Conds. Matter, 20, 55210 (2008)
  9. R. S. Katiyar, A. Kumar, and N. M. Murari, "Observation of one magnon and magnon-phonon-electric dipole coupling in multiferroics bismuth ferrite thin films", Apl. Phyis, Lett. (2008)
  10. H. M. Jang, R. S. Katiyar, and M. K. Singh, "Polarized Raman scattering and lattice dynamics of antiferromagnetic NdFeO3", J. Raman Spectroscopy (2008)
  11. R. S. Katiyar, A. Kumar, and . M. Murari, "Probing of ferroelectric phase transition in sol-gel derived polycrystalline bismuth ferrite thin films", Journal of Raman Spectroscopy (2008)
  12. V. Gupta, R. S. Katiyar, J. F. Scott, K. Sreenivas, and H. K. Yadav, "Raman spectroscopy and dielectric studies of multiple phase transition in ZnO:Ni", App. Phys. Lett. , 92, 65535 (2008)
  13. C. Rettori, P. Bhattacharya , J. G. Duque, R. S. Katiyar, P. G. Pagliuso, and K. Samantha, "Room temperature ferromagnetism in dilute magnetic semiconductor (DMS) Zn1-xCoxO thin films ", Indian Journal of Pure and Applied Physics (2008)
  14. P. Bhattacharya, R. S. Katiyar, G. Morell, K. Samanta, and D. Varshney, "Self-assembled ZnO nanostructure for field-emission devices", Journal of Nanoscience and Nanotechnology (2008)
  15. J. F. Scott, R. S. Katiyar, M. K. Sing, M. P. Singh, and P. . Wilfrid, "Spinglass transition in BiFeO3 single crystal", Phys. Rev. B (2008)
  16. P. X. Feng, R. S. Katiyar, A. Kumar, N. Upia, and B. Yang, "Structure and optical properties of nanocrystalline ZnO thin films grown on Si (100), ", Applied Physics Letters (2008)
  17. R. S. Katiyar, A. Kumar, and N. M. Murari, "Studies of structural dielectric and electrical properties of (1-x)Pb(Fe2/3W1/3)O3-xPbTiO3 ferroelectric thin films", J .of Alloys and Compounds (2008)
  18. A. Kumar, M. Correa, R. S. Katiyar, and J. F. Scott, "Study of optical phonon lifetimes near the diffuse phase transition in relaxor ferroelectric thin films", Matter, 20, 65535 (2008)
  19. R. S. Katiyar, R. Palai, H. Schmid, J. F. Scott, and M. K. Singh, "The  Phase of Multiferroic Bismuth Ferrite and its - Metal-Insulator Transition", Phys. Rev. B (2008)
  20. C. Tirado, G. Bonilla, R. Choudhary, R. S. Katiyar, and D. Pradhan, "1. Effect of La substitution on structural and electrical properties of Ba(Fe2/3W1/3)O3 nanoceramics, R.N.P. Choudhary, D.K. Pradhan, C.M. Tirado, G.E. Bonilla, and R.S. Katiyar, Journal of Material Science, 42, 7423 (2007)", Journal of Material Science, 42, 7423 (2007)
  21. R. S. Katiyar, S. Majumder, S. Nieto, and S. Sivaprakash, "Crystal chemistry modification of lithium nickel cobalt oxide cathodes for lithium ion rechargeable batteries", Journal of Power Sources, 170, Issue 2, 433 (2007)
  22. V. Gupta, R. S. Katiyar, K. Sreenivas, and H. Yadav, "Defect induced activation of Raman silent modes in rf co-sputtered Mn doped ZnO thin films", J. Phys. D: Appl. Phys., , 40, 6005 (2007)
  23. R. Choudhury, R. S. Katiyar, C. Rinaldi, and D. Varshney, "Dielectric dispersion and magnetic properties of Ba-modified Pb(Fe1/2Nb1/2)O3", Applied Physics A, 89, 193 (2007)
  24. R. S. Katiyar, A. Kumar, and N. M. Murari, "Diffused phase transition and relaxor behavior in Pb(Fe2/3W1/3)O3 Thin Films", Applied Physics Letters, 90, 65535 (2007)
  25. P. Ehrhart, N. Karan, R. S. Katiyar, R. Thomas, and R. Waser, "Dyspronsium scandate thin films prepared by metal organic chemical vapor deposition on Pt/TiOx/SiO2/Si substrates for MIM capacitor applications", ESC Transactions-Wahsington DC Physics and thecnology of High-k Gate Dielectrics, 11, 529 (2007)
  26. G. Bonilla, R. Choudhary, R. S. Katiyar, and D. Pradhan, "Effect of La-substitution on structural and dielectric properties of Bi(Sc1/2Fe1/2)O3 ceramics", Journal of Alloys and Compounds, 437, 220 (2007)
  27. A. Dixit, P. S. Dobal, and R. S. Katiyar, "Effect of lanthanum substitution on the Raman spectra of barium titanate thin films", Journal of Raman Spectroscopy, 38, 142 (2007)
  28. R. Choudhary, N. Karan, R. S. Katiyar, D. Pradhan, and B. Samantaray, "Effect of plasticizer on structural and electrical properties of polymer nanocomposites electrolytes", Int. J. Electrochem. Sci., 2, 861 (2007)
  29. P. Bhattacharya, P. Dutta, R. S. Katiyar, A. Kumar, S. Majumder, N. Ortega, M. Sheehra, and I. Takeuchi, "Effect of Processing Conditions on Electrical and Magnetic Properties of Pb(Zr,Ti)O3 –CoFe2O4 Multilayers Thin Films", Mater. Res. Soc. Symp. Proc., 1000, 1000 (2007)
  30. V. Gupta, R. S. Katiyar, K. Sreenivas, and H. Yadav, "Effect of surfaces defects on the visible emission from ZnO nanoparticles", Journal of Material Research, 22, 2404 (2007)
  31. S. Das, R. S. Katiyar, O. Oviedo, R. Singhal, and M. Tomar, "Effect of ZnO coating on the electrochemical performence of LiMn1.5Ni0.5O4 cathode material", Proceedings of Materials Research Society, 972, 972 (2007)
  32. D. Agarwal, A. Dixit, and R. S. Katiyar, "Enhanced tunability and relaxor characteristic in calcium substituted barium zirconium titanate thin films", Integrated Ferroelectrics, 91, 48 (2007)
  33. N. Dewan, V. Gupta, R. S. Katiyar, and K. Sreenivan, "Growth of amorphous TeOx (2 x 3) thin film by radio frequency sputtering", Journal of Applied Physics, 101, 65535 (2007)
  34. A. Bhalla, M. Jain, Q. Jia, N. Karan, R. S. Katiyar, I. Usov, H. Wang, H. Wang, and J. Yoon, "High tunability of lead strontiun titanate thin films using a conductive LaNiO3 as electrodes", App. Phys. Let., 91, 65535 (2007)
  35. G. E. Bonilla, R. N. Choudhary, R. S. Katiyar, D. K. Pradhan, and C. M. Tirado, "Impedance characteristics of Pb(Fe2/3W1/3)O3-BiFeO3 composites, R.N.P. Choudhary", Physica Status Solidi, (b) 244, 2254 (2007)
  36. V. Gupta, R. S. Katiyar, A. Singh, and K. Sreenivas, "Influence of Ca additives on the optical and dielectric studies of sol-gel derived PbTiO3 ceramics", Journal of Physics and Chemistry of Solids, 68, Issue 2, 119 (2007)
  37. M. Correa, R. S. Katiyar, and A. Kumar, "Investigation of frequency dependent and independent dielectric maxima in relaxor ferroelectric thin films", Applied Physics Letters, 91, 65535 (2007)
  38. P. Bhattacharya, R. N. Choudhary, R. S. Katiyar, C. Rinaldi, and C. Rodríguez, "Low frequency dielectric dispersion and magnetic properties of La, Gd modified Pb(Fe0.50Ta0.50)O3 multiferroics", Journal Magnetism and Magnetic Materials, 313, issue 2, 253 (2007)
  39. R. S. Katiyar, A. Kumar, N. Ortega, and J. Scott, "Maxwell-Wagner space charge effects on the Pb(Zr,Ti)O3-CoFe2O4 multilayers", Applied Physics Letters, 91, 65535 (2007)
  40. R. Das, S. Das, P. Dobal, R. S. Katiyar, and B. Sundarakannan, "Micro-Raman study of Zr-substituted Bi4Ti3O12 ceramics", J. Raman Spectroscopy, 38, 1077 (2007)
  41. R. S. Katiyar, A. Kumar, N. Murari, and J. Scott, "Probing the ferroelectric phase transition through Raman spectroscopy in Pb(Fe2/3W1/3)1/2Ti1/2O3 thin films", Applied Physics Letters, 90, 65535 (2007)
  42. J. Burgos, R. S. Katiyar, A. Kumar, R. Singhal, and M. Tomar, "Role of rare-earth element doping in the cycleability of LiMn2O4 chatodes for Li-ion rechargeable batteries", Proceedings of Materials Research Society, 972, 972 (2007)
  43. R. S. Katiyar and Y. Yuzyuk, "Stress manipulation in ferroelectric thin films and superlattices", Vibrational Spectroscopy, 45, 108 (2007)
  44. P. Bhattacharya, R. Choudhary, R. S. Katiyar, and K. Pérez, "Structural and dielectric properties of mechanoshynthesized BiFeO3-Ba(Zr0.6Ti0.4)O3 solid solutions", Material Chemistry and Physics, 105, 286 (2007)
  45. R. Choudhary, M. Correa, and R. S. Katiyar, "Structural and Dielectric Properties of Ta-Modified Pb(Sc0.5Nb0.5)O3 Ceramics", Journal of Applied Physics, 101, 54116 (2007)
  46. P. Bhattacharya, R. N. Choudhary, R. S. Katiyar, and K. Pérez, "Structural and Electrical Properties of BiFeO3-Pb(ZrTi)O3 Composites", Applied Physics , A, 86, 131 (2007)
  47. R. S. Katiyar, R. Melgarejo, R. Singhal, and M. Tomar, "Structural and ferroelectric properties of Bi4-xNixTi3O12 thin films by sol-gel process", Proceedings of Materials Research Society, 966, 966 (2007)
  48. P. Bhattacharya, R. N. Choudhary, S. R. Das, P. Dutta, R. S. Katiyar, A. Manivannan, and M. S. Seehra, "Structural and Multiferroic Properties of La-Modified BiFeO3 Ceramics", Journal of Applied Physics, 101, 34104 (2007)
  49. P. Bhattacharya, S. Dussan, R. S. Katiyar, and K. Samanta, "Structural and optical properties of nano-crystalline Zn1-xMnxO", Applied Physics Letters, 90, 65535 (2007)
  50. G. Bonilla, R. Choudhary, R. S. Katiyar, D. Pradhan, and C. Tirado, "Structural, dielectric and impedance properties of Ca(Fe2/3W1/3)O3 nanoceramics", Physica, B 393, 24 (2007)
  51. D. C. Agrawal, A. Dixit, S. K. Gupta, R. S. Katiyar, S. B. Majumder, and Y. N. Mohapatra, "Studies on the Dielectric and Relaxor Behavior of Sol-Gel Derived Barium Strontium Zirconate Titinate Thin Films", Material Letters, 61, Issue 17, 3685 (2007)
  52. H. Huhtinen, R. S. Katiyar, R. Pagan, R. Palai, and R. Valdes, "Study of phase transition and magnetoelectric coupling of laser ablated BiFeO3 thin films by Raman scattering", Proceeding of the 2007 16th IEEE International Symposium on Applications of Ferroelectrics, 1-4244-1334-6, 413 (2007)
  53. S. Das, R. S. Katiyar, R. Melgarejo, S. Nieto, O. Oviedo, R. Singhal, and M. Tomar, "Synthesis and characterization of Nd doped LiMn2O4 cathode for Li ion rechargeable batteries", Journal of Power Sources, 164, Issue 2, 857 (2007)
  54. P. Bhattacharya, R. S. Katiyar, and K. Samanta, "Temperature dependent E2 Raman Modes in ZnCoO Termary Alloy", Physical Review, B, 75, 35208 (2007)
  55. I. Gopalakrishnan, A. Gupta, A. Inoue, O. Jayakumar, R. S. Katiyar, S. Kulshreshtha, D. Louzguine-Luzgin, K. Rao, K. Samanta, and M. Singh, "The structural and magnetic properties of (In1-xFex)2O3 (0.0  x  0.25) system: prepared by gel combustion method", Applied Physics Letters, 91, 52504 (2007)
  56. V. Gupta, R. S. Katiyar, K. Sreenivas, and H. K. Yadav, " Temperature dependence of the dynamics of zone boundary phonons in ZnO:Li", J. App. Phys
  57. M. Correa, R. S. Katiyar, and A. Kumar, "Dielectric and Raman studies of La modified lead scandium niobate ceramics", Proceeding of the 7thInternational Symposium on Applications of Ferroelectrics
  58. D. C. Agrawal, A. Dixit, and R. S. Katiyar, "Dielectric and relaxor properties of barium based ferroelectric thin films", Indian Journal of Applied Physics
  59. R. S. Katiyar, A. Kumar, and I. Rivera, "Divide line between relaxor, diffused ferroelectric, ferroelectric and dielectric relaxation", App. Phys. Lett.
  60. R. N. Choudhary, R. S. Katiyar, D. K. Pradhan, B. K. Samantaray, and A. K. Thakur, "Effect of montmorillonite filler on structural and electrical properties of polymer nanocomposite", Ionics
  61. R. S. Katiyar, A. Kumar, N. Kumar, S. Nieto, J. Saavedra-Arias, and R. Thomas, "Electrochemical properties of layered Li(Ni0.8Co0.1Mn0.1)O2 cathode material and structural analysis at various stages of charge-discharge process", J. of Power Source
  62. A. Kumar, R. S. Katiyar, and N. Ortega, "Enhanced polarization and dielectric properties of Pb(Zr1-xTix)O3 thin films", App. Phys. Let.
  63. S. R. Das, R. S. Katiyar, A. Kumar, S. P. Singh, R. Singhal, and M. S. Tomar, "Li ion rechargeable battery with LiMn1.5Ni0.46Rh0.04O4 spinel cathode material, 2006, communicated", Electrochemical and Solid-State Letters
  64. J. Burgos, M. Tomar, R. S. Katiyar, and R. Singhal, "LiMn1.8Mg0.2O4 spinel cathode material for Li ion rechargeable batteries", Proceeding of the 7thInternational Symposium on Applications of Ferroelectrics
  65. V. Gupta, R. S. Katiyar, K. Sreenivas, and H. K. Yadav, "Low-frequency zone-boundary phonons in Li doped ZnO ceramics", J. App. Phys.
  66. 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", ECSL
  67. R. S. Katiyar, J. F. Scott, and M. K. Singh, "New Magnetic phase transitions in BiFeO3", J. Phys. Cond Matt. (2008) in Press,
  68. 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", MRS Fall Meeting Proceeding
  69. V. Gupta, R. S. Katiyar, K. Sreenivas, and H. K. Yadav, "Phase Transition in ZnO nanoparticles: Raman Spectroscopic and calorimetric studies", J. Phys. D: Applied Physics
  70. S. Dussan, R. S. Katiyar, G. L. Sharma, and M. K. Singh, "Phonon anhormonicity in CuAlO2 thin films", Phys. Rev. B
  71. M. Correa, R. S. Katiyar, and A. Kumar, "Strain induced relaxor behavior in PbSc0.5Nb0.25Ta0.25O3 thin films: A comparison with nanoceramics", J. Am. Cer. Soc
  72. G. E. Bonilla, R. N. Choudhary, R. S. Katiyar, D. K. Pradhan, and C. M. Tirado, "Structural and Electrical Characteristics of Sr(Fe2/3W1/3)O3 Nanoceramics", Materials Charactirazation
  73. P. S. Dobal, A. Dixit, and R. S. Katiyar, "Structural and Electrical Properties of Lanthanum Substituted Barium Titinate Thin Films", Journal of Applied Physics
  74. N. K. Karan, R. S. Katiyar, A. Kumar, R. 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", ECSL
  75. V. Gupta, R. S. Katiyar, K. Sreenivas, and H. K. Yadav, "Structural studies and Raman spectroscopy of forbidden zone boundary phonons in Ni doped ZnO ceramics", J. Raman Spectroscopy
  76. R. S. Katiyar, A. Kumar, and N. Ortega, "Structural, dielectric, electrical, and magnetic properties of multiferroic BaTiO3-NiFe2O4 composite ceramic", Proceeding of the 7thInternational Symposium on Applications of Ferroelectrics

Grants

  1. C. R. Cabrera, Y. Ishikawa, R. S. Katiyar, and R. Thomas. Nanostructured Materials and Interfaces for Li Ion Batteries, United States Department of Defense, DPSCoR, 3 years, June 2008, Multiple PIs, Pending, $1,050,000.
  2. O. Auciello, S. Bader, D. Bonnell, S. Desu, M. Gómez, Y. Ishikawa, R. S. Katiyar, V. Makarov, 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 Nanostructured Spintronic and Magnetic Materials, United States Department of Energy, DoE-EPSCoR, 3 years, June 2008, Multiple PIs, Pending, $3,375,000.
  3. S. Bader and R. S. Katiyar. Multifunctional Nanostructured Thin Films for Spintronics Applications, Other, DOE-EPSCoR Laboratory Partnership, 3 years, April 2008, Single PI, Pending, $495,000.
  4. 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.
  5. P. Bhattacharya, R. S. Katiyar, S. Majumder, and C. Rinaldi. Nanostructured magnetoelectric composites, United States Department of Defense, DEPSCoR, 3 years, May 2006, Multiple PIs, Approved, $564,000.
  6. P. Bhattacharya, R. S. Katiyar, and S. Majumder. Design & development of novel nano-structured active materials for multifunctional applications., United States Department of Defense, DoD-HSI, 3 years, January 2006, Multiple PIs, Approved, $357,000.
  7. R. S. Katiyar. Nanostructured spintronics materials for novel magneto-electronic devices., United States Department of Defense, DoD, 3 years, July 2005, Single PI, Approved, $205,000.
  8. P. Bhattacharya, M. Gómez, Y. Ishikawa, R. S. Katiyar, S. Majumder, G. Morell, E. Smotkin, and M. S. Tomar. “Novel Energy Sources-Material architecture and charge transport in solid state ionic devices”, United States Department of Energy, DoE-EPSCoR, 4 years, May 2004, Multiple PIs, Approved, $1,200,000.
  9. F. M. Aliev, C. R. Cabrera, L. F. Fonseca, Y. Ishikawa, R. S. Katiyar, G. Morell, R. G. Raptis, and B. R. Weiner. Center for Nanoscale Materials, National Aeronautics and Space Administration, NASA, 6 years, January 2003, Multiple PIs, Approved, $6,000,000.

Presentations

  1. R. S. Katiyar (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), .
  2. R. S. Katiyar (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), American Ceramic Society.
  3. R. S. Katiyar (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), American Ceramic Society.
  4. R. S. Katiyar (October 2008) "Effect of particle size and synthesis route on the electrochemical properties LiFePO4 cathode materials" in MS&T08 (Material Science and Technology 2008 Conference and Exhibition).
  5. R. S. Katiyar (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).
  6. R. S. Katiyar (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), American Ceramic Society.
  7. R. S. Katiyar (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), American Ceramic Society.
  8. R. S. Katiyar (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), American Ceramic Society.
  9. R. S. Katiyar (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), American Ceramic Society.
  10. R. S. Katiyar (June 2008) "Divide line between relaxor, ferroelectric and dielectric relaxation" in International Symposium on Integrated Ferroelectrics (ISIF), .
  11. R. S. Katiyar (June 2008) "Epitaxially grown multiferroics Pb(Zr,Ti)O3/CoFe2O4 layered nanostructure" in International Symposium on Integrated Ferroelectrics (ISIF), .
  12. R. S. Katiyar (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).
  13. R. S. Katiyar (May 2008) "Spin glass behavior in BiFeO3 single crystal" in European Materials Research Sociaty.
  14. R. S. Katiyar (May 2008) "Carbon coated nano-crystalline LiFePO4 cathodes for Li-ion rechargeable batteries" in 213th ECS Meeting.
  15. R. S. Katiyar (May 2008) "Dielectric properties of nanocomposite polymer electrolytes based on Polyethylene oxide and organically modified Na montmorillonite" in 213th ECS Meeting.
  16. R. S. Katiyar (May 2008) "Effect of Al substitution on structural and electrochemical properties of o-LiMnO2" in 213th ECS Meeting.
  17. R. S. Katiyar (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.
  18. R. S. Katiyar (May 2008) "Metal-ferroelectric-insulator-silicon (MFIS) devices based on DyScO3 buffer layer and Bi3.25Nd0.75Ti3O12 ferroelectrics" in 213th ECS Meeting.
  19. R. S. Katiyar (May 2008) "Structural analysis of layered Li(Ni0.9-xCoxMn0.1)O2 cathode material at various stages of electrochemical process" in 213th ECS Meeting, .
  20. R. S. Katiyar (May 2008) "Local and Global Magnetic Properties of Zn1-xCoxO, ZnCo2O4, and Mn-doped GaAs Thin Films" in Intermagnet Conference.
  21. R. S. Katiyar (March 2008) "Magnetic and structural properties of p type magnetic semiconductor CuAlO2 prepared by rf sputtering" in MRS Spring meeting.
  22. R. S. Katiyar (March 2008) "Anomalous low temperature magnetic ordering and spin phonon coupling in BiFeO3 thin films" in APS March Meeting.
  23. R. S. Katiyar (March 2008) "MIS and MFIS devices: DyScO3 as a gate-oxide and buffer-layer" in APS March Meeting.
  24. R. S. Katiyar (March 2008) "Multilayer Pb(Zr,Ti)O3/CoFe2O4 epitaxialy thin films" in APS March Meeting.
  25. R. S. Katiyar (March 2008) "New phase transition in ceramic SrSnO3: Raman scattering and differential thermal analysis" in APS March Meeting.
  26. R. S. Katiyar (March 2008) "Strain induced relaxor behavior in PbSc0.50Nb0.25Ta0.25O3 thin films: A comparison with the nanoceramics" in APS March Meeting.
  27. R. S. Katiyar (March 2008) "Structural, electrical and magnetic properties of Bi(FexTi1-x)O3 thin films prepared by chemical solution deposition" in APS March Meeting.
  28. R. S. Katiyar (February 2008) "Anomalous magnetic ordering transition and induced Raman Scattering in BiFeO3 thin films" in 7thInternational Symposium on Applications of Ferroelectrics (ISAF), .
  29. R. S. Katiyar (February 2008) "Dielectric and Raman studies of La modified lead scandium niobate ceramics" in 7thInternational Symposium on Applications of Ferroelectrics (ISAF.
  30. R. S. Katiyar (February 2008) "Dielectric and Raman studies of La modified lead scandium niobate ceramics" in 7thInternational Symposium on Applications of Ferroelectrics (ISAF.
  31. R. S. Katiyar (February 2008) "Fabrication of BiFeO3 capacitor structure with reduced leakage current" in 7thInternational Symposium on Applications of Ferroelectrics (ISAF).
  32. R. S. Katiyar (February 2008) "Magnetic and structural properties of multiferroic CuFeO2 prepared by rf sputtering" in 7thInternational Symposium on Applications of Ferroelectrics (ISAF).
  33. R. S. Katiyar (February 2008) "Phonon anomalies in multiferroic BiFeO3 epitaxial thin films with rhombohedral (R3c) symmetry" in 7thInternational Symposium on Applications of Ferroelectrics (ISAF).
  34. R. S. Katiyar (February 2008) "Structural properties of multiferroic CuFe(1-x)AlxO2 (x=0.0-0.1) thin films prepared by rf sputtering" in 7thInternational Symposium on Applications of Ferroelectrics (ISAF) .
  35. R. S. Katiyar (February 2008) "Structural, dielectric, electrical and magnetic propeties of multiferroic BaTiO3-NiFe2O4 composite ceramic" in 7thInternational Symposium on Applications of Ferroelectrics (ISAF).
  36. R. S. Katiyar (February 2008) "Phase transition in BiFeO3 thin films by using Raman spectroscopy" in Fundamental Physics of Ferroelectric 2008 workshop.
  37. R. S. Katiyar (November 2007) "Improper ferroelectric behavior in magnetoelectric Pb(Zr,Ti)O3-CoFe2O4 multilayers thin films" in Materials Research Society Fall Meeting.
  38. R. S. Katiyar (November 2007) "Investigation of electrical and optical properties of Pb1/2Sr1/2TiO3 nano-ceramics" in Materials Research Society Fall Meeting.
  39. R. S. Katiyar (November 2007) "Magnetic and structural properties of p type magnetic semiconductor CuFexAl1-xO2 prepared by rf sputtering" in Materials Research Society Fall Meeting.
  40. R. S. Katiyar (November 2007) "Multiphonon Raman scattering and optical properties of ZnMnO ternary alloy" in Materials Research Society Fall Meeting.
  41. R. S. Katiyar (November 2007) "Phase transition and dielectric tunability of (Pb0.35Sr0.65) (Zr0.5Ti0.5)O3 thin films" in Materials Research Society Fall Meeting.
  42. R. S. Katiyar (November 2007) "Spin Lattice coupling in multiferroic BiFeO3 epitaxial films with rhombohedral R3c symmetry" in Materials Research Society Fall Meeting.
  43. R. S. Katiyar (November 2007) "Structural and luminescence properties of Zn1-xCuxO thin films" in Materials Research Society Fall Meeting.
  44. R. S. Katiyar (November 2007) "Studies of dielectric, electrical and optical properties of Pb(Fe2/3W1/3)1/2Ti1/2O3 thin films by impedance and Raman spectroscopy" in Materials Research Society Fall Meeting.
  45. R. S. Katiyar (November 2007) "Tunability and microwave dielectric properties of (Pbx,Sr1-x)(Zr0.5,Tio.5) thin films" in Materials Research Society Fall Meeting.
  46. R. S. Katiyar (October 2007) "LiNi1-x-yMnxCoyO2 as a layered cathode material for Li-ion batteries" in II Congreso Internacional de Física.
  47. R. S. Katiyar (October 2007) "Structural stability and enhanced electrochemical properties of layered Li(mn,Ni)O2 as a promising cathode material" in 212th ECS meeting.
  48. R. S. Katiyar (October 2007) "Tunability and dielectric properties of (PbxSr1-x)(Zr0.5,Ti0.5)O3 thin films on Pt/TiO2/SiO2/Si substrates prepared by chemical solution deposition" in 10thInternational Conference on Advanced Materials.
  49. R. S. Katiyar (October 2007) "Dysprosium scandate thin films prepared by metal organic chemical vapor deposition on Pt/TiO2/SiO2/Si substrates for MIM capacitor applications" in 212th ECS meeting.
  50. R. S. Katiyar (October 2007) "Improvements in the electrochemical properties of LiNiO2 cathode materials by Mn and Co dopings for li-ion batteries" in 212th ECS meeting.
  51. R. S. Katiyar (September 2007) "Chemical solution approach for the growth of a variety of electronic oxide thin films" in MS&T.
  52. R. S. Katiyar (September 2007) "Dielectric relaxation and ferroelectric phase transition behavior in PFW-PT thin films" in MS&T.
  53. R. S. Katiyar (September 2007) "Origin of room temperature ferromagnetism in Co doped ZnO" in MS&T.
  54. R. S. Katiyar (September 2007) "Phase transition studies in epitaxially grown BiFeO3 thin films by Raman spectroscopy" in MS&T.
  55. R. S. Katiyar (May 2007) "Study of phase transitions and magnetoelectric coupling of laser ablated BiFeO3 thin films by Raman scattering" in 16th IEEE conference ISAF.
  56. R. S. Katiyar (May 2007) "Nano-composite of Pb(Zr,Ti)O3 –CoFe2O4 multiferroic thin films by pulsed laser deposition" in 2nd Mexican Workshop on Nanostructured Materials.
  57. R. S. Katiyar (May 2007) "Phase transition and spin-phonon coupling studies in BiFeO3 thin films probed by Raman spectroscopy" in Singh, ISIF.
  58. R. S. Katiyar (May 2007) "First principles study of the effects of the mobility of LiNixMn1-xO2 and LiCrxMn1-xO2," in 211th ECS meeting.
  59. R. S. Katiyar (May 2007) "Structural and electrochemical properties of chemical solution derived LiMn1-NiO2 cathodes" in 211th ECS meeting.
  60. R. S. Katiyar (May 2007) "Synthesis and characterization of LiMn1.8Mg0.2O4 spinel cathode material for Li-ion rechargeable batteries application" in 211th ECS meeting.
  61. R. S. Katiyar (May 2007) "Synthesis characterization and application of LiFePO4 cathode material for Li ion rechargeable batteries" in 211th ECS meeting.
  62. R. S. Katiyar (April 2007) "Effect of Free Carriers on Ferromagnetic Properties of Zn1-xCoxO Thin Films" in Material Research Society Spring Meeting.
  63. R. S. Katiyar (April 2007) "Effect of processing conditions on electrical and magnetic properties of Pb(ZrTi)O3 - CoFe2 O4 multilayers thin films" in Material Research Society Spring Meeting.
  64. R. S. Katiyar (December 2006) "Structural and magnetic properties of Zn1-xCoxO thin films" in International Conference on Magnetic .
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