Magnetic and Electronic Properties of Double Perovskite Sr_2-xLa_xVMoO₆

• Hiroyuki Matsushima

• Hirotaka Gotoh

• Yoichi Takeda

• Kenji Ueda

• Hidefumi Asano

抄録

The magnetic and electronic properties of double perovskite Sr 2- x La x VMoO 6 ( x = 0.9–1.2) polycrystalline bulk samples have been investigated. Magnetization and electrical resistivity measurements indicate that Sr 2- x La x VMoO 6 is an antiferromagnetic metal with an antiferromagnetic transition temperature in the range 123–146 K. X-ray photoemission spectroscopy measurements reveal that Mo has a tetravalent state (Mo 4+ ) and V has a trivalent state (V 3+ ) in SrLaVMoO 6 . These results indicate that V 3+ (3d 2 ) ions are antiferromagnetically coupled with Mo 4+ (4d 2 ) ions. Electron-doping effects of Sr 2- x La x VMoO 6 by La substitution differed from those of half-metallic Sr 2- x La x FeMoO 6 . This can be qualitatively explained by considering the different electron-doped orbitals and ordering ratios of B-site ions between Sr 2- x La x VMoO 6 and Sr 2- x La x FeMoO 6 (Mo/V or Mo/Fe).

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 50 (10R), 103004-, 2011-10-01

  IOP Publishing

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1360847871786692096
• NII論文ID: 210000071367
• DOI: 10.1143/jjap.50.103004
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.50.103004
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.50.103004/pdf
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