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題名: | The Formation of Infinite-layer Cuprates and Correlation with Temperature and Partial Pressure of Oxygen |
作者: | Liu, Chia-Jyi;Koriyama, S.;Yamauchi, H. |
貢獻者: | 物理學系 |
日期: | 1993-10
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上傳時間: | 2012-09-10T06:11:08Z
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出版者: | Elsevier |
摘要: | Various combinations of calcination temperature and oxygen partial pressures have been investigated to stabilize the infinite-layer structure in Ca1−xSrxCuO2 and (Ca1−x−yYy)SrxCuO2 systems using a solid-state reaction method. It is found that the stability of infinite-layer structure for different compositions strongly depends on the calcination conditions. The infinite-layer structure is stable in the range of 0.12 ⩽ x ⩽ 0.16 for Ca1−xSrxCuO2 at the calcination conditions of 940°C and 3% partial pressure of oxygen, and also in the range of 0.08 ⩽ x ⩽ 0.12 at the calcination conditions of 1020°C and 1 atm of flowing oxygen. The solubility limit extends to the range of 0.10 ⩽ x ⩽ 0.20 for y = 0.02 in Ca1−x−yYySrxCuO2 prepared at 940°C under 3% partial pressure of oxygen. |
關聯: | Physica C: Superconductivity, 215(3-4): 395-401 |
顯示於類別: | [物理學系] 期刊論文
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