| 对靶溅射技术制备的La2/3Ca1/3MnO3/YBa2Cu4O8/La2/3Ca1/3MnO3薄膜中Tc的降低 |
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| 引用本文： | 赵昆,黄康权.对靶溅射技术制备的La2/3Ca1/3MnO3/YBa2Cu4O8/La2/3Ca1/3MnO3薄膜中Tc的降低[J].低温物理学报,2003,25(Z2):415-419. |
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| 作者姓名： | 赵昆 黄康权 |
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| 作者单位： | 1. 聊城大学物理系,山东,252059;香港中文大学物理系
2. 香港中文大学物理系 |
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| 基金项目： | 香港研究资助局资助项目，， |
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| 摘 要： | 本文用对靶溅射技术制备了La2/3Ca1/3MnO3/YBa2Cu4O8/La2/3Ca1/3MnO3薄膜.与YBCO单层薄膜相比,由于超导/铁磁系统中的磁性邻近效应,三层薄膜表现出较低的超导转变温度.薄膜的R～T测量曲线显示出超磁阻(CMR)效应和超导转变,预示着超导和铁磁特性共存于LCMO/YBCO/LCMO三文治结构.
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| 关 键 词： | 高温超导 超磁阻 邻近效应 |
SUPPRESSED Tc OF La2/3Ca1/3MnO3/YBa2Cu4O8/La2/3Ca1/3MnO3 TRILAYER FILMS BY FACING-TARGET SPUTTERING TECHNIQUE |
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| Abstract.SUPPRESSED Tc OF La2/3Ca1/3MnO3/YBa2Cu4O8/La2/3Ca1/3MnO3 TRILAYER FILMS BY FACING-TARGET SPUTTERING TECHNIQUE[J].Chinese Journal of Low Temperature Physics,2003,25(Z2):415-419. |
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| Authors: | Abstract |
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| Abstract: | Trilayer films in which a superconducting YBa2Cu4O8 (YBCO) layer is sandwiched between two ferromagnetic La2/3Ca1/3MnO3 (LCMO) layers are formed by facing-target sputtering technique. The difference of superconducting transition temperature (Tc) between YBCO single layer and LCMO/YBCO/LCMO trilayers as functions of YBCO thickness is described by the magnetic proximity effect in superconductor/ferromagnet structure. Colossal magnetoresistance (CMR) effect and superconducting transition are shown in R～T curve, indicating the coexistence of superconductivity and ferromagnetism in the LCMO/YBCO/LCMO sandwich structures. |
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| Keywords: | high temperature superconductivity colossal magnetoresistance proximity effect |
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