Magnetoresistance of La-Sr-Mn Oxides Prepared by Oxidation of Melt-Quenched Alloy.

• Matsuzaki Kunio

  Mechanical Engineering Laboratory

• Inoue Akihisa

  Institute for Materials Research

Bibliographic Information

Other Title

• 磁石・磁性材料の化学　ＩＩ　　液体急冷したＬａ‐Ｓｒ‐Ｍｎ合金の酸化と磁気抵抗特性
• エキタイ キュウレイ シタ La-SrMn ゴウキン ノ サンカ ト ジキ テイコウ トクセイ

Abstract

The La_0.85Sr_0.15Mn oxides with a perovskite structure and a negative magnetoresistance were easily prepared by oxidation of melt-quenched alloy tapes in air. The perovskite structure was obtained by oxidation at over 1073K. The magmetoresistance ratio at room temperature increase with oxidation temperature and reached 5% at 1373K. The annealing in O₂ atomsphere enhanced the magnetoresistance ratio to 10%. Therefore, the oxidation process of the melt-quenched alloy is useful for the preparation of perovsky type La_0.85Sr_0.15Mn oxide with a negative magnetoresistance.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 46 (2), 163-166, 1999

  Japan Society of Powder and Powder Metallurgy

Keywords

• La-Sr-Mn oxide
• oxidation
• perovskite
• magnetoresistance
• melt-quenching

Details

• CRID: 1390001206308693632
• NII Article ID: 10002261855
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.46.163
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 4655540
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4655540
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed