Institute for Functional Nanomaterials

Physicist

University of Puerto Rico, Mayagüez Campus

Teams

Cluster III: Multifunctional Nanostructures

E-mail

mtomar uprm edu

Publications

1. W. Jia, A. Parra, O. J. Perales, M. S. Tomar, P. Voyles, and J. Zhu, "Structural, Optical and Magnetic Characterization of Monodisperse Fe-doped ZnO Nanocrystals", Journal of Applied Physics (2008)
2. L. Angelats, O. J. Perales, and M. S. Tomar, "Structural, Optical and Magnetic Properties of Co and Fe doped ZnO Thin Films Grown by Radio frequency Magnetron Sputtering", MRS Proceedings (2008)
3. L. M. Angelats, H. J. Jiménez, R. Martinez, and M. S. Tomar, "Transverse Magnetoresistance of Zn0:9Co0:1O:Al Thin Films ", Phys. Rev. Lett. , (2008)
4. Y. Cedeno-Mattei, O. J. Perales, W. Stratton, M. S. Tomar, and P. Voyles, "Tuning of Magnetic Properties in Cobalt Ferrite Nanocrystals", Journal of Applied Physics (2008)
5. W. Jia, A. Parra, O. J. Perales, R. Singal, C. Sotomayor, M. S. Tomar, and P. Voyles, "Effect of reaction temperature on the structural and optical properties of ZnO nanocrystals", NANOTECH, 4, 336 (2007)
6. J. Hwang , A. Parra, O. J. Perales, R. Singal, M. S. Tomar, and P. Voyles, "Evidence of ferromagnetism in Zn1−xMxO (M = Ni, Cu) nanocrystals for spintronics", Nanotechnology, 18, 65535 (2007)
7. E. Chavarry, O. J. Perales, J. Perez, E. Rodriguez, and M. S. Tomar, "Low-Temperature Polyol Synthesis of Nanocrystalline Cobalt and CoPt Alloys", NANOTECH, 4, 408 (2007)
8. S. Dussan, A. Parra, O. J. Perales, and M. S. Tomar, "Low-temperature synthesis and characterization of Fe-doped ZnO nanocrystals", NANOTECH, 4, 350 (2007)
9. Y. Cedeno-Mattei, O. J. Perales, F. Roman, R. Singal, and M. S. Tomar, "Optimization of Magnetic Properties in Cobalt Ferrite Nanocrystals", NANOTECH, 4, 281 (2007)
10. L. M. Angelats, H. J. Jiménez, R. Martinez, O. J. Perales, and M. S. Tomar, "Structural, Optical, and Magnetic Properties of Co- and Fe-doped ZnO Films Grown by Radio Frequency Magnetron Sputtering", Mater. Res. Soc. Symp. Proc., 957, 423 (2007)
11. J. Banerjee, E. Calderon, O. J. Perales, B. Renteria, R. Singal, and M. S. Tomar, "Synthesis and Magnetic Properties of Polyaniline-Based Magnetic Nanocomposites for EMI Applications", NANOTECH, 1, 688 (2007)
12. M. Balaguera, O. J. Perales, L. Rivera, R. Singal, and M. S. Tomar, "Zinc Sulfide and Cadmium Sulfide based Nanocrystals ", NANOTECH, 4, 340 (2007)
13. 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
14. E. Calderon, G. Gutierrez, O. J. Perales, and M. S. Tomar, "MnxZn1-xFe2-yRyO4 (R = Gd, Eu) Ferrite Nanocrystals for Potential Magnetocaloric Applications ", Microelectronics Journal
15. E. Fachini, S. Jauregui, W. Jia, O. J. Perales, M. S. Tomar, and O. Vasquez, "Structural and Luminescence Properties of Nanocrystalline Eu3+-doped Gd2O3 ", MRS Proceedings
16. E. Fachini, S. Jauregui, W. Jia, O. J. Perales, M. S. Tomar, and O. Vasquez, "Synthesis and Characterization of Nanocrystalline Eu3+-doped Gd2O3", NANOTECH
17. Y. Cedeno-Mattei, O. J. Perales, M. S. Tomar, and P. Voyles, "Synthesis of high coercivity Cobalt Ferrite Nanocrystals", Microelectronics Journal

Grants

1. 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.
2. 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.
3. O. J. Perales, C. Rinaldi, J. Santos, M. S. Tomar, and O. Uwakweh. Synergistic Partnership for Research and Education on Functional and Nanostructured Materials, National Science Foundation, PREM, 5 years, March 2004, Multiple PIs, Approved, $2,700,000.

Presentations

1. O. J. Perales and M. S. Tomar (April 2007) "Synthesis and characterization of Gd-doped ZnO nanocrystals" in MRS Spring Meeting .