Pressure Effect on the Vortex Phase Diagram in Bi_2Sr_2CaCu_2O_<8+y>

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Effects of hydrostatic pressure on the vortex phase diagram are studied in a highly anisotropic high temperature superconductor Bi<SUB>2</SUB>Sr<SUB>2</SUB>CaCu<SUB>2</SUB>O<SUB>8+y</SUB>. The local magnetization measured by using a micro-Hall-probe shows clear vortex lattice melting steps at high temperatures and the peak effect at low temperatures up to 1 GPa. We found that the pressure shifts these phase boundaries towards higher fields systematically. These changes are qualitatively unde0rstood by considering the reduction of the anisotropy γ of the system with pressure. The temperature dependence of pressure coefficient, however, suggests that there exists substantial contribution of the disorder to the phase boundaries in this system.

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, 511-513, 1998 

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002690819
  • 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
    4493965
  • 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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