(Sr-Ca)RuO_3系の遍歴電子磁性 -インバー効果- Itinerant Electron Magnetism of (Sr-Ca)RuO_3 System -Invar Effect-

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We report here the results of Debye-Scherrer X-ray diffraction measurements in the temperature range from 12K to 300K of the perovskite compounds SrRuO<SUB>3</SUB> and CaRuO<SUB>3</SUB>. We show that SrRuO<SUB>3</SUB> indicates an clear anomaly with the temperature dependence of the unit-cell parameters and volume below its ferromagnetic transition temperature T<SUB>c</SUB> of 160K through magnetovolume effect. In particular, the volume of SrRuO<SUB>3</SUB> is almost constant below T<SUB>c</SUB>, and invar effect is discovered for the first time in transition-metal oxide, which is seen in 3d transition-metal itinerant magnets, e.g., Fe-Ni alloy. Therefore, it is concluded that SrRuO<SUB>3</SUB> is classified to a moderately weak itinerant ferromagnet. On the other hand, CaRuO<SUB>3</SUB> shows no anomaly in the variation of the volume with temperature, suggesting that magnetic ordering does not occur in this compound.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 43(9), 1090-1094, 1996-09-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002013043
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4036692
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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