@article{aggarwal_nori_jin_pant_trichy_kumar_narayan_narayan_2009, title={Magnetic properties and their dependence on deposition parameters of Co/Al2O3 multilayers grown by pulsed laser deposition}, volume={57}, ISSN={["1359-6454"]}, DOI={10.1016/j.actamat.2009.01.018}, abstractNote={Co/Al2O3 multilayered thin films were grown on Si (111) substrates by pulsed laser deposition (PLD) at temperatures from room temperature (RT) to 600 °C. The Co/Al2O3 multilayered thin film grown at RT contains continuous cobalt layers in alumina matrices, with no evidence of island formation. On the other hand, cobalt showed a tendency to form islands in alumina matrices for growth temperatures in the range of 300–600 °C. All the Co/Al2O3 multilayered thin films showed ferromagnetic behavior up to RT. It was observed that variations in the deposition parameters can significantly influence the magnetic properties of Co/Al2O3 multilayers. Depending on the temperature and pulse rate, RT coercivities in the 50–300 Oe range were observed. Films deposited at 600 °C using a laser pulse rate of 10 Hz exhibited a decrease of coercivity with increasing measurement temperature. On the other hand, films deposited at 600 °C using a reduced pulse rate of 2 Hz demonstrated an "anomalous" relationship between low-temperature coercivity and temperature. In these films, coercivity exhibited a weak tendency to increase with temperature. Squareness (Mr/Ms) of the hysteresis loops and its dependence on the temperature was also shown to be strongly affected by the deposition parameters. These observations have been rationalized on the basis of two competing magnetic anisotropies that act along different directions in the material.}, number={6}, journal={ACTA MATERIALIA}, author={Aggarwal, Ravi and Nori, Sudhakar and Jin, Chunming and Pant, Punam and Trichy, Gopinath R. and Kumar, Dhananjay and Narayan, J. and Narayan, Roger J.}, year={2009}, month={Apr}, pages={2040–2046} }
 @article{trichy_chakraborti_narayan_prater_2008, title={Structure-magnetic property correlations in the epitaxial FePt system}, volume={92}, number={10}, journal={Applied Physics Letters}, author={Trichy, G. R. and Chakraborti, D. and Narayan, J. and Prater, J. T.}, year={2008} }
 @article{chakraborti_trichy_narayan_prater_kumar_2007, title={Effect of Al doping on the magnetic and electrical properties of Zn(Cu)O based diluted magnetic semiconductors}, volume={102}, number={11}, journal={Journal of Applied Physics}, author={Chakraborti, D. and Trichy, G. and Narayan, J. and Prater, J. T. and Kumar, D.}, year={2007} }
 @article{trichy_chakraborti_narayan_zhou_2007, title={Growth, characterization, and magnetic properties of FePt nanodots on Si (100)}, volume={102}, number={3}, journal={Journal of Applied Physics}, author={Trichy, G. R. and Chakraborti, D. and Narayan, J. and Zhou, H.}, year={2007} }
 @article{chakraborti_ramachandran_trichy_narayan_prater_2007, title={Magnetic, electrical, and microstructural characterization of ZnO thin films codoped with Co and Cu}, volume={101}, number={5}, journal={Journal of Applied Physics}, author={Chakraborti, D. and Ramachandran, S. and Trichy, G. and Narayan, J. and Prater, J. T.}, year={2007} }
 @article{chakraborti_trichy_prater_narayan_2007, title={The effect of oxygen annealing on ZnO : Cu and ZnO :(Cu,Al) diluted magnetic semiconductors}, volume={40}, ISSN={["1361-6463"]}, DOI={10.1088/0022-3727/40/24/002}, abstractNote={Here we report a systematic study of magnetic, electronic and microstructural properties of Cu-doped and Cu and Al codoped ZnO thin films, grown epitaxially on a (0 0 0 1) sapphire substrate by the pulsed laser deposition technique. The films were annealed in oxygen at high temperature (600 °C) and their properties were compared with the as deposited films in order to study the role of defects like oxygen vacancies on the ferromagnetic properties. The doping of ZnO : Cu specimens with Al increased the carrier concentration by three orders of magnitude (from 1017 to 1020 cm−3) without altering the ferromagnetic ordering. On the other hand, a reduction in oxygen vacancies concentration brought about by high temperature annealing in oxygen had a large detrimental effect on ferromagnetism. These results tend to eliminate a free carrier mediated mechanism and point towards a defect mediated mechanism, such as a bound-magnetic-polaron mediated exchange, as being responsible for stabilizing long-range ferromagnetic ordering in these systems.}, number={24}, journal={JOURNAL OF PHYSICS D-APPLIED PHYSICS}, author={Chakraborti, D. and Trichy, G. R. and Prater, J. T. and Narayan, J.}, year={2007}, month={Dec}, pages={7606–7613} }
 @article{trichy_narayan_zhou_2006, title={L1(0) ordered epitaxial FePt (001) thin films on TiN/Si (100) by pulsed laser deposition}, volume={89}, number={13}, journal={Applied Physics Letters}, author={Trichy, G. R. and Narayan, J. and Zhou, H.}, year={2006} }