Professor (Tenured since 7/01), Associate Professor (7/96-6/01), Physics Department, UNIVERSITY OF PUERTO RICO, Mayaguez, PR

Assistant Professor, Engineering Physics Department, UNIVERSITY OF TULSA, OK

Visiting faculty, Elect. Engn. Dept, UNIVERSITY OF SOUTH FLORIDA, Tampa, FL.

Assistant Professor, Physics Department, UNIVERSITY OF MINNESOTA, Duluth, MN

Visiting faculty, Electrical and Computer Engineering Department, ARIZONA STATE UNIVERSITY, Tempe, AZ


  “Novel energy sources,” DOE, (Co-PI), and “functional and nanostructured materials” funded by the NSF-PREM, (Co-PI).


•“Growth and studies of nitride thin film system,” M.S. Tomar, NSF-EPSCoR, $150,000 (6/97–5/99)

•”Heterepitaxial growth of  ZnO films for optoelectronic applications,” M.S. Tomar, R.S. Katiyar, H.J.

Himenez, DOD-AFOSR, $490,000 (10/01-09/05)

•”Nanocrystalline Li-ion intercalated transistion oxide thin films for recharageable battery,” NASA-
Nenotechnology Program, R.S. Katiyar, M.S. Tomar, S.B. Mazumder, $300,000, (12/01-11/05)

•Epitaxial and high permittivity perovskite thin films for microwave applications,” M.S. Tomar, R.S.
Katiyar, S.B. Mazumder,”, DoD-ONR, $300,3000 (10/01-09/05)

•“Infrastructure development to study ferroelectric domain structures using Atomic Force microscopy,”
M.S. Tomar, R.S. Katiyar, S.B. Majumder, DoD-ONR, $68,000 (11/01-10/02)

•“Electroceramics and integrated ferroelectrics,” R. S. Katiyar and M.S. Tomar, $45,000, DoD-ARO (11/99-10/00)

•“Novel Energy Sources: material architecture and charge transport in solid state ionic devices,” A.
Guadallupe, R. Katiyar, M.S. Tomar,  L. Steinberg, U.S. Department of Energy (DOE-EPSCoR), $1.5 million (05/01-04/04)

•“Novel electroceramic thin films and devices,” R.S. Katiyar, M.S. Tomar, and F. Aliev, DoD-EPSCoR, $224,000 (12/98-11/2001)


REFEREED RESEARCH PAPERS (accepted/published): Total 82 papers.

Selected papers since 2004:

O. Perales-Perez, M. S. Tomar, S. L. Dussan-Devia, M. Morales, C. Echevarria, and O. Mata, “Low-temperature synthesis and magnetic characterization of transition-metal doped ZnS Nanostructures,” NANOTECH (in press, 2006)

M. S. Tomar, O. Perales-Perez, and S. Dussan- Devia, “Rare-Earth Substituted Bi4Ti3O12 Nanocrystalline thin films: synthesis and ferroelectric characterization,” NANOTECH (in press, 2006)

O. Perales-Perez, A. Parra-Palomino, M.S. Tomar, J. Lopez-Ferrer, and W. Jia, “Transition metal-doped ZnO nanocrystals for potential spintronics applications,” IEEE Transactions on Magnetism (in press, 2006).

S. Dussan, R.E. Melgarejo, M.S. Tomar, R.S. Katiyar, “Effect of composition on the ferroelectric response of Bi4-xSm xTi3O12,” Mater. Res. Soc. Proc. (in press, 2006)

M.S. Tomar, R.E. Melgarejo, R. Singhal, L.M. Angelats, R.S. Katiyar, “Studies of Bi4-xGdx Ti3O12 bifunctional materials,” Mater. Res. Soc. Symp. (in press, 2006)

R. E. Melgarejo, M.S. Tomar, and R.S. Katiyar, “Leakage current and large ferroelectric memory in Bi4-xNdxTi3O12 thin films,” J. Ferroelectrics (in press, 2006)

R.E. Melgarejo, M.S. Tomar, R. Guzman, S.P. Singh, “Synthesis and characterization of BiFeO3-BaTiO3 materials,’ J. Ferroelectrics (in press, 2006)

M.S. Tomar, R.E. Melgarejo, S.P. Singh, R.S. Katiyar, “Rare earth substituted Bi4Ti3O12 thin films with large ferroelectric response,” Integrated Ferroelectrics (in press, 2006)

M.S. Tomar, R.P. Guzman, R.E. Melgarejo, “Structural and magnetic behavior of Zn1-xCoxFe2O4 for applications in spintronics,” Indn. J. Phys. (in press, 2006)

Triana Merced, Stephanie Santos, Omayra Rivera, Nicole Villalba, Yahira Baez, José Gaudier, Javier Avalos, Oscar Perales, M. S. Tomar, A. Parra-Palomino, and Amaliris Ruiz-Mendoza, “Effect of Zinc Oxide Nanocrystals in media containing E. coli and C. xerosis bacteria,” Mater. Res. Soc. Symp. Proc. 900E (in press, 2006)

S.P. Singh, M.S. Tomar, Y. Ishikawa, “Experimental and theoretical studies of LiNi1/3Mn1/3M1/3O2 (M = Mo, Rh) cathode material,” Microelectonics Journal 36, 491 (2005)

S.P. Singh, O. Perales-Perez, M.S. Tomar, and O. Mata, “Synthesis and characterization of transition metal ion doped ZnS and ZnO nanostructures,” Institute of Physics Conference Proceedings (Physics of Semiconductors) 772, 839 (2005)

S.P. Singh, M.S. Tomar, Y. Ishikawa, S.B. Mazumder, R.S. Katiyar, “Density functional theoretical studies of the intercalation properties of layered LiMO2 (M = Zr, Nb, Rh, Mo, Ru) materials,” Mater. Res. Soc. Symp. Proc.  835, 297 (2005)

M.S. Tomar, R.E. Melgarejo and S.P. Singh, “Leakage current and ferroelectric memory in Nd and Sm substituted Bi4Ti3O12 thin films,” Microelectronics Journal 36, 574 (2005)

S.P. Singh, O. Perales-Perez, M.S. Tomar, A. Parra-Palomino, A. Ruiz-Mendoz, “Room-temperature synthesis and characterization of highly monodisperse transition ion doped ZnO nanocrystals,” NANOTECH 2, 29 (2005)

M.S. Tomar, S.P. Singh, O. Perales-Perez, R.P. Guzman, E. Calderon, C. Rinaldi-Ramos, “Synthesis and magnetic behavior of nanostructured ferrite for spintronics,” Microelectronics Journal 36, 475 (2005)

S.P. Singh, O. Perales-Perez, W. Zia, and M.S. Tomar, “Nanoscience of oxide materials,” Proceedings of 10th Latin American congress of heat and mass transfer, LATCYM 2005, ISBN-980-237-230-7, CD-ROM. invited paper

Ricardo E. Melgarejo and Maharaj S. Tomar, “Bi4-xSmxTi3O12 ceramic films: synthesis, structural properties, and ferroelectric properties,” Proceedings 10th Latin American Congress on heat and mass transfer,” LATCYM-2005, ISBN-980-237-7, CD-ROM.

R.E. Melgarejo and M.S. Tomar, “Ferroelectric memory in La substituted Bi4Ti3O12 thin films,” Mater. Res. Soc. Symp. Proc. 784, 219 (2004)

R. Guzman, M.S. Tomar, R. Melgarejo, R.S. Katiyar, “Synthesis and characterization of Ca1-xSrxCu3Ti4O12 thin films for dielectric applications,” Mater. Res. Soc. Symp. Proc. 785, 113 (2005)

M.S. Tomar, R.E. Melgarejo, A. Hidalgo, S.P. Singh, R.S. Katiyar, “Ferroelectric behavior of sol-gel derived Bi4-xNdxTi3O12 thin films,” Integrated Ferroelectrics  62, 221(2004)

O.J. Perales-Perez, M.S. Tomar, S.P. Singh, A. Watanabe, T. Arai, A. Kasuya, K. Kohji, "Ambient temperature synthesis of nano-crystalline ZnO and its application in the generation of hydrogen,” Phys. Stat. Sol. (C)1,803 (2004)

L. Bermudez, R. Guzman, M.S.Tomar, R.E. Melgarejo, "Structure and dielectric properties of Ca1-xMgxCu3Ti4O12 materials,” Mater. Res. Soc. Symp. Proc. 785, 159 (2004)

S.P. Singh, O.J. Perales-Perez, M.S. Tomar, O.V. Mata, “Synthesis and characterization of nanostructured Mn-doped ZnS thin films and nanoparticles,” Phys. Stat. Sol. ©1, 811(2004)

Prof. Tomar-Física x2011
Physics Departments
Phone: 787-832-4040 xt. 2055