Oxygen-Ordering Effects in High-Tc Superconductors.
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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
Bibliographic Information
- Other Title
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- Oxygen-Ordering Effects in High-Tc Supe
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Abstract
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.
Journal
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- The Review of High Pressure Science and Technology
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The Review of High Pressure Science and Technology 7 425-430, 1998
The Japan Society of High Pressure Science and Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390282679359019136
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- NII Article ID
- 10002690398
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- NII Book ID
- AN10452913
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- ISSN
- 13481940
- 0917639X
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- NDL BIB ID
- 4493944
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed
