Thin-film ferromagnetic semiconductors based on Sb2-xVxTe3 with TC of 177 K

Zhenhua Zhou; Yi-Jiunn Chien; Ctirad Uher
September 2005
Applied Physics Letters;9/12/2005, Vol. 87 Issue 11, p112503
Academic Journal
Thin-film ferromagnetic semiconductors Sb2-xVxTe3 with the Curie temperature as high as 177 K were prepared on sapphire (0001) substrates by molecular-beam epitaxy. Films of Sb2-xVxTe3 with x up to 0.35 display robust, out-of-plane ferromagnetic ordering that depends on the concentration of vanadium in the structure. The Curie temperature was determined from magnetization measurements and Arrott plots. Ferromagnetic order is manifested by hysteresis loops observed in magnetization, magnetoresistivity, and the anomalous Hall effect.


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