화학공학소재연구정보센터
Chemical Physics Letters, Vol.496, No.1-3, 56-58, 2010
Room-temperature ferromagnetism of vanadium-doped 6H-SiC
Semiconductors doped with magnetic ions, also known as dilute magnetic semiconductors, reveal both semiconducting and ferromagnetic. In this Letter, we prepared vanadium-doped 6H-SiC single crystals for exhibiting ferromagnetism characteristic measured by superconducting quantum interference device (SQUID) magnetometer. Our work demonstrates that moderate doping of vanadium carbide powder into 6H-SiC is a novel attempt for finding ferromagnetism feature. And the testing results show that the observed magnetic signal is possibly contributing to V element. This phenomenon can be explained by sp-d exchange mechanism, and offers an experimental data for possibility of doping nonmagnetic atoms to control the local moments in wide band-gap semiconductors. (C) 2010 Elsevier B.V. All rights reserved.