@article { ISI:000346168600001,
	title = {Modification of crystal anisotropy and enhancement of magnetic moment of Co-doped SnO2 thin films annealed under magnetic field},
	journal = {Nanoscale Research Letters},
	volume = {9},
	year = {2014},
	month = {NOV},
	pages = {635},
	publisher = {SPRINGER},
	address = {233 SPRING ST, NEW YORK, NY 10013 USA},
	abstract = {<p>Co-doped SnO2 thin films were grown by sputtering technique on SiO2/Si(001) substrates at room temperature, and then, thermal treatments with and without an applied magnetic field (H-TT) were performed in vacuum at 600 degrees C for 20 min. H-TT was applied parallel and perpendicular to the substrate surface. Magnetic M(H) measurements reveal the coexistence of a strong antiferromagnetic (AFM) signal and a ferromagnetic (FM) component. The AFM component has a N,el temperature higher than room temperature, the spin axis lies parallel to the substrate surface, and the highest magnetic moment m =7 mu(B)/Co at. is obtained when H-TT is applied parallel to the substrate surface. Our results show an enhancement of FM moment per Co+2 from 0.06 to 0.42 mu(B)/Co at. for the sample on which H-TT was applied perpendicular to the surface. The FM order is attributed to the coupling of Co+2 ions through electrons trapped at the site of oxygen vacancies, as described by the bound magnetic polaron model. Our results suggest that FM order is aligned along [101] direction of Co-doped SnO2 nanocrystals, which is proposed to be the easy magnetization axis.</p>},
	keywords = {Antiferromagnetism, Crystal anisotropy, Diluted magnetic oxide, Ferromagnetism, Magnetic anisotropy, Magnetic moment, Spin axis, thin film},
	issn = {1556-276X},
	doi = {10.1186/1556-276X-9-635},
	author = {Loya-Mancilla, Sagrario M. and Poddar, Pankaj and Das, Raja and Ponce, Hilda E. Esparza and Templeton-Olivares, Ivan L. and Solis-Canto, Oscar O. and Ornelas-Gutierrez, Carlos E. and Espinosa-Magaa, Francisco and Olive-Mendez, Sion F.}
}
