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- Schilling James S.
- Department of Physics, Washington University
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- Looney Craig
- Department of Physics, Washington University
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- Sadewasser Sascha
- Department of Physics, Washington University
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- Wang Yong
- Department of Physics, Washington University
書誌事項
- タイトル別名
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- Oxygen-Ordering Effects in High-Tc Supe
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抄録
In the superconducting oxides the value of Tc may be a sensitive function of both the concentration and the distribution of oxygen defects, the latter quantity itself being a function of both temperature and pressure. Recent high-pressure experiments on Tl2Ba2CuO6+y have revealed distinct low- and high-temperature relaxation processes above 15 K, presumably originating in the oxygen sublattice. In TlSr2CaCu2O7-y and YBa2Cu3O6, 41 only relaxation above 250 K is observed. The relaxation time τ in YBa2Cu3O6, 41 is found to increase rapidly with pressure from approximately 10 hours at 1 bar to 550 hours at 2. 3 GPa. In systems where such relaxation effects occur, Tc is thus not a unique function of pressure, but rather depends in a complicated way on the pressure-thermal-time prehistory of the sample.
収録刊行物
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- 高圧力の科学と技術
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高圧力の科学と技術 7 425-430, 1998
日本高圧力学会
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キーワード
詳細情報
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- CRID
- 1390282679359019136
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- NII論文ID
- 10002690398
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- NII書誌ID
- AN10452913
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- ISSN
- 13481940
- 0917639X
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- NDL書誌ID
- 4493944
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可