Pressure Effect on the Curie Temperature of Intermetallic Compounds Gd_<1-x>Y_xCo_2

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The pressure dependence of the magnetic transition temperature is studied for psudo-binary compounds (Gd<SUB>1-x</SUB>Y<SUB>x</SUB>) Co<SUB>2</SUB> (x=0∼0. 7) by measuring the temperature variation of ac permeability (μ) under pressure up to ∼10 kbar. With increasing temperature, μ for x≤0. 4 decreases sharply at the magnetic transition temperature T<SUB>C</SUB> and μ for x≥0. 5 makes a sharp peak just below the magnetic transition temperature T'<SUB>C</SUB>. It was found that T<SUB>C</SUB> and its pressure derivative (dT<SUB>C</SUB>/dP) decrease almost linearly with x (x≤0. 4), but T'<SUB>C</SUB> decreases and dT'<SUB>C</SUB>/dP increases with x (x≥0. 5). The x dependence of T<SUB>C</SUB> and dT<SUB>C</SUB>/dP are discussed in terms of the model of exchange enhanced paramagnetsim and that of T'<SUB>C</SUB> and dT'<SUB>C</SUB>/dP on the basis of the experimental results of rapid increase of high field susceptibility and decrease of magnetic moment of Co with x, reflecting both effects of environment and metamagnetic properties on Co.

収録刊行物

  • 高圧力の科学と技術 = The Review of high pressure science and technology  

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 650-652, 1998 

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002691313
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4494011
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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