| 熔融织构YBCO的磁性 |
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| 引用本文： | 卫崇德,刘尊孝,兰健,孙允希,甘子钊,任洪涛,肖玲,贺庆.熔融织构YBCO的磁性[J].物理学报,1991,40(10):1694-1702. |
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| 作者姓名： | 卫崇德 刘尊孝 兰健 孙允希 甘子钊 任洪涛 肖玲 贺庆 |
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| 作者单位： | (1)北京大学物理系,北京,100871; (2)北京有色金属研究总院,北京,100088 |
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| 摘 要： | 测量了熔融织构YBCO样品从1.5K到89K的磁化曲线。磁场H平行于c轴时,在1.5K,7K和10K观察到磁通跳跃,在15—83K的温度区间观察到峰值现象。详细分析了磁化曲线和磁临界电流的各向异性。讨论了晶粒之间连接的性质和主要的钉扎中心。
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| 关 键 词： | 熔融织构 YBCO 磁性 磁通 高Tc |
| 收稿时间： | 1990-12-03 |
MAGNETIC PROPERTIES OF A YBCO CRYSTAL PREPARED BY MELT-TEXTURED GROWTH METHOD |
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| WEI CHONG-DE,LIU ZUN-XIAO,LAN JIAN,SUN YUN-XI,GAN ZI-ZHAO,REN HONG-TAO,XIAO LINO and HE QING.MAGNETIC PROPERTIES OF A YBCO CRYSTAL PREPARED BY MELT-TEXTURED GROWTH METHOD[J].Acta Physica Sinica,1991,40(10):1694-1702. |
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| Authors: | WEI CHONG-DE LIU ZUN-XIAO LAN JIAN SUN YUN-XI GAN ZI-ZHAO REN HONG-TAO XIAO LINO and HE QING |
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| Abstract: | The magnetization curves of YBCO crystal prepared by melt-textured growth method were measured from 1.5K to 89K. Flux jumps were observed for H‖ c at 1.5K, 7K and 10K. Peak effects were observed for H‖ c in the temperature range of 15-83K. The anisotropies of magnetization curves and magnetic critical current are analysed in detail. The properties of connection between grains and the pinning mechanism are discussed. |
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