熔融织构YBCO的磁性  

MAGNETIC PROPERTIES OF A YBCO CRYSTAL PREPARED BY MELT-TEXTURED GROWTH METHOD

作　　者：卫崇德 刘尊孝[1] 兰健[1] 孙允希[1] 甘子钊[1] 任洪涛[2] 肖玲[2] 贺庆[2] 

机构地区：[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

出　　处：《物理学报》1991年第10期1694-1702,共9页Acta Physica Sinica

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。The magnetization curves of YBCO crystal prepared by melt-textured growth method were measured from 1.5K to 89K. Flux jumps were observed for H11 c at 1.5K, 7K and 10K. Peak effects were observed for H11 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.

关 键 词：熔融织构 YBCO 磁性 磁通 高TC 

分 类 号：TM262[一般工业技术—材料科学与工程]