Charge Ordered Structure and its Impurity Doping Effect in Spinel AlV2O4

• HORIBE Yoichi

  Department of Physics and Astronomy, Rutgers University

• MORI Shigeo

  Department of Physics, Osaka Prefecture University

• KATSUFUJI Takuro

  Department of Physics, Waseda Unviersity

Bibliographic Information

Other Title

• スピネル化合物ＡｌＶ２Ｏ４における電荷秩序構造と不純物置換効果
• サイキン ノ ケンキュウ カラ スピネル カゴウブツ AlV2O4 ニ オケル デンカ チツジョ コウゾウ ト フジュンブツ チカン コウカ

Abstract

The charge ordered (CO) state in spinel A1V₂O₄, which appears below 700 K, was examined by electron and synchrotron x-ray diffraction experiments. It was found that the CO structure is characterized by the formation of V clusters (heptamers), each of which is consisting of 7 vanadium atoms and is in a spin-singlet state as a total. In addition, it was revealed that the Cr substitution for V in A1V₂O₄ suppressed the formation of the long-ranged CO structure and induced the charge disordered (CD) state. As a result, the coexisting state between the CO and CD states with the 20-30 nm size was stabilized in A1V_2-xCr_xO₄ with x=0.125.

Journal

• Nihon Kessho Gakkaishi

  Nihon Kessho Gakkaishi 48 (6), 424-428, 2006

  The Crystallographic Society of Japan

Details

• CRID: 1390001204087414016
• NII Article ID: 10018467436
• NII Book ID: AN00188364
• DOI: 10.5940/jcrsj.48.424
• ISSN: 18845576
• ISSN: 03694585
• NDL BIB ID: 8629972
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8629972
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed