| Y_(0.928)Pr_(0.072)Ba_2Cu_3O_7超导单晶的钉扎机制研究 |
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| 引用本文： | 金刚,秦正平,蔡传兵,曹世勋,姚忻,张金仓.Y_(0.928)Pr_(0.072)Ba_2Cu_3O_7超导单晶的钉扎机制研究[J].低温物理学报,2009,31(2). |
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| 作者姓名： | 金刚 秦正平 蔡传兵 曹世勋 姚忻 张金仓 |
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| 作者单位： | 金刚,JIN Gang(周口师范学院物理系,河南周口,466000;上海交通大学物理系,上海,200030);秦正平,蔡传兵,曹世勋,张金仓,QIN Zheng-Ping,CAI Chuan-Bing,CAO Shi-xun,ZHANG Jin-cang(上海大学物理系,上海,200444);姚忻,YAO xin(上海交通大学物理系,上海,200030)
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| 基金项目： | 国家自然科学基金，教育部长江学者和创新团队发展计划，上海市科委基础研究重点项目 |
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| 摘 要： | 研究了Y0.928 Pr0.072 Ba2 Cu3 O7(后文称YPBCO)单晶在不同温度下的磁特性,计算了不同温度下的钉扎力密度Fp对磁场的依赖关系.结果表明,在不同温度下的钉扎力密度可近似标度在同一条曲线上;标度函数和峰效应引起的最大Jc所对应的磁场与不可逆场的比值都表明,YPBCO单晶在磁通玻璃态的钉扎机制主要是样品中Pr的微观电子分布不均匀性引起的正常相面钉扎.
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| 关 键 词： | YPBCO单晶 钉扎力标度 正常相面钉扎 微观相分离 |
STUDY OF PINNING MECHANISMS IN Y_(0.928)Pr_(0.072)Ba_2Cu_3O_7 SINGLE CRYSTALS SUPERCONDUCTOR |
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| JIN Gang, QIN Zheng-Ping CAI Chuan-BingCAO Shi-xun YAO xin ZHANG Jin-cang.STUDY OF PINNING MECHANISMS IN Y_(0.928)Pr_(0.072)Ba_2Cu_3O_7 SINGLE CRYSTALS SUPERCONDUCTOR[J].Chinese Journal of Low Temperature Physics,2009,31(2). |
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| Authors: | JIN Gang QIN Zheng-Ping CAI Chuan-BingCAO Shi-xun YAO xin ZHANG Jin-cang |
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| Institution: | JIN Gang1,3 QIN Zheng-Ping2 CAI Chuan-Bing2CAO Shi-xun2 YAO xin3 ZHANG Jin-cang11Department of Physics,Zhoukou Normal University,Zhoukou 4660002Department of Physics,Shanghai University,Shanghai 2004443Department of Physics,Shanghai Jiao Tong University,Shanghai 200030 |
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| Abstract: | The magnetization curves at different temperatures have been measured in Y0.928Pr0.072Ba2Cu3O7 (YPBCO) single crystals. The magaetic field dependence of pinning force density Fp is obtained,and it is shown that the pinning force density in different temperatures can be scaled on the same curve. The scaling function as well as the ratio of the maximum pinning force field vs irreversibility field indicate that the pinning mechanisms in YPBCO single crystals is mainly the normal surface pinning causedl by the ... |
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| Keywords: | YPBCO single crystals Pinning force's scaling Normal surface pinning Micro-phase separation |
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