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Effect of vanadium on the room temperature ferromagnetism of V-doped 6H-SiC powder |
Wang Hui (王辉)a b, Yan Cheng-Feng (严成锋)a, Kong Hai-Kuan (孔海宽)a, Chen Jian-Jun (陈建军)a, Xin Jun (忻隽)a, Shi Er-Wei (施尔畏 )a |
a Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China; b University of the Chinese Academy of Sciences, Beijing 100049, China |
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Abstract This study focuses on the effect of V-doping on the ferromagnetism (FM) of 6H-SiC powder. The X-ray diffraction results indicate that V is inserted into the 6H-SiC lattice. The Raman spectra reveale that with a V concentration of 25 ppm, the crystalline quality and carrier concentration of 6H-SiC are hardly varied. It is found that after V-doping process, the saturation magnetization (Ms) and the vacancy concentration of 6H-SiC are both increased. From these results, it is deduced that the effect of V might contribute mainly to the increase of vacancy concentration, thus resulting in the increase of Ms of V-doped 6H-SiC.
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Received: 07 June 2012
Revised: 13 August 2012
Accepted manuscript online:
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PACS:
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75.50.Pp
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(Magnetic semiconductors)
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75.40.-s
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(Critical-point effects, specific heats, short-range order)
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75.30.Fv
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(Spin-density waves)
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Fund: Project supported by the Innovation Programs of the Chinese Academy of Sciences (Grant No. KJCX2-EW-W10). |
Corresponding Authors:
Yan Cheng-Feng
E-mail: pabol2006@163.com
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Cite this article:
Wang Hui (王辉), Yan Cheng-Feng (严成锋), Kong Hai-Kuan (孔海宽), Chen Jian-Jun (陈建军), Xin Jun (忻隽), Shi Er-Wei (施尔畏 ) Effect of vanadium on the room temperature ferromagnetism of V-doped 6H-SiC powder 2013 Chin. Phys. B 22 027505
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