YBa_2(Cu_<1-x>M_x)_3O_y (M=Fe, Co)のホール効果 Hall Effect on YBa_2(Cu_<1-x>M_x)_3O_y (M=Fe, Co)

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著者

    • 勝山 茂 KATSUYAMA Shigeru
    • 大阪大学工学部材料物性工学科 Department of Materials Science and Engineering, Faculty of Engineering, Osaka University
    • 森岡 真人 MORIOKA Makoto
    • 大阪大学工学部材料物性工学科 Department of Materials Science and Engineering, Faculty of Engineering, Osaka University
    • 永井 宏 NAGAI Hiroshi
    • 大阪大学工学部材料物性工学科 Department of Materials Science and Engineering, Faculty of Engineering, Osaka University

抄録

We measured the normal-state Hall effect on the polycrystal of YBa<SUB>2</SUB>(Cu<SUB>1-x</SUB>M<SUB>x</SUB>)<SUB>3</SUB>O<SUB>y</SUB> (M=Fe, Co) prepared by two kinds of heat treatments. The synthesized YBa<SUB>2</SUB> (Cu<SUB>1-x</SUB>M<SUB>x</SUB>)<SUB>3</SUB>O<SUB>y</SUB> (M=Fe, Co) was slowly cooled from 890°C in air. Some of them were annealed below 400°C in O<SUB>2</SUB> gas (sample [O]s). The others were heated at 800°C in N<SUB>2</SUB> gas followed by annealing below 400°C in O<SUB>2</SUB> gas (sample [NO]<SUB>s</SUB>). It is considered that there is a difference in the configuration of substituent in the Cul-0 planes between [O]<SUB>s</SUB> and [NO]<SUB>s</SUB>: in [O]<SUB>s</SUB> the substituent is randomly located, while in [NO]<SUB>s</SUB> that makes clusters. The carrier density nH of [O]<SUB>s</SUB> and [NO]<SUB>s</SUB> in YBa<SUB>2</SUB>(Cu<SUB>1-x</SUB>Co<SUB>x</SUB>)<SUB>3</SUB>O<SUB>y</SUB> system decreases with an increase of x. In the case of YBa<SUB>2</SUB>(Cu<SUB>1-x</SUB>Fe<SUB>x</SUB>)<SUB>3</SUB>O<SUB>y</SUB> system, nH Of [0]<SUB>s</SUB> decreases with an increase of x, while that of [NO]<SUB>s</SUB> is almost constant independent of x. The difference in the behavior of nH between YBa<SUB>2</SUB>(Cu<SUB>1-x</SUB>Fe<SUB>x</SUB>)<SUB>3</SUB>0<SUB>y</SUB> and YBa<SUB>2</SUB>(Cu<SUB>1-x</SUB>Co<SUB>x</SUB>)<SUB>3</SUB>O<SUB>y</SUB> systems seems to be due to the difference of the microscopic structure around the substituent.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(2), 206-210, 1996-02-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002011344
  • 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
    3926720
  • 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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