X-ray Photoemission Spectroscopy and Magnetic Properties of Bi Doped LaMnO3

• OGAWA Takashi

  Graduate School of Engineering, Tokai University

• SHINDO Haruo

  Graduate School of Engineering, Tokai University

• TAKEUCHI Hiromasa

  Graduate School of Engineering, Tokai University

• KOIZUMI Yoshiharu

  Graduate School of Engineering, Tokai University

Bibliographic Information

Other Title

• Ｂｉ添加ＬａＭｎＯ３のＸＰＳ分析と磁性
• Bi テンカ LaMnO3 ノ XPS ブンセキ ト ジセイ

Abstract

Perovskite-type La_1−xBi_xMnO₃ (LBMO), which are prepared by doping the Bismuth (Bi) ion in LaMnO₃, were shown to exhibit the colossal magnetoresistance (CMR) effect. Samples were produced using a sintering process in an air atmosphere as a function of the Bi composition ratio x. X-ray diffraction measurements showed that the LBMO crystal structure varied among an orthorhombic (or rhombohedral) type with 0.0<x<0.3, to a cubic type with 0.3<x<0.5, and to a monoclinic type with for 0.5<x. The CMR effect of LBMO for x=0.2 was approximately 400% at 140 K. In addition, the magnetoresistance of the LBMO system was found to be proportional to the square of the magnetization. It was interpreted that, from XPS analysis, the valence states of manganese and bismuth atoms in LBMO contain [Mn³⁺,Mn⁴⁺] and [Bi³⁺, Bi²⁺ (or pseudo-divalent Bismuth)] ionic states.

Journal

• Hyomen Kagaku

  Hyomen Kagaku 27 (9), 511-517, 2006

  The Surface Science Society of Japan

Details

• CRID: 1390001206457755136
• NII Article ID: 10018051649
• NII Book ID: AN00334149
• DOI: 10.1380/jsssj.27.511
• COI: 1:CAS:528:DC%2BD28Xht1Wgtr3L
• ISSN: 18814743
• ISSN: 03885321
• NDL BIB ID: 8091007
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8091007
• Web Site: http://www.jstage.jst.go.jp/article/jsssj/27/9/27_9_511/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed