Magnetic properties of Mn-doped cubic silicon carbide

✍ Scribed by S.B. Ma; Y.P. Sun; B.C. Zhao; P. Tong; X.B. Zhu; W.H. Song

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 206 KB
• Volume: 394
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.02.028

✦ Synopsis

Bulk polycrystalline Si 1Àx Mn x C (0pxp0.1) samples were prepared by the solid-state reaction method. Their structural and magnetic properties had been investigated. Powder X-ray diffraction analysis demonstrates that the appropriate Mn doping does not change the crystal structure of cubic silicon carbide (3C-SiC). Magnetic studies reveal that the ferromagnetism can be developed when Mn substitution is as low as x ¼ 0.01. The Curie temperature (T C ) increases monotonously with increasing Mn-doped content up to x ¼ 0.05, and then almost keeps constant as x further increases. The effective magnetic moments are 2.05m B /Mn, 1.19m B /Mn, 0.90m B /Mn, and 0.89m B /Mn for the samples with x ¼ 0.01, 0.03, 0.05, and 0.1, respectively.