Bi（2223）／Ag带中磁通钉扎的标度率  

SCALING LAWS FOR FLUX PINNING IN Bi(2223) /Ag TAPE

作　　者：郭树权[1] 张金龙[1] 秦晓梅[1] 奚正平[1] 周廉[1] 

机构地区：[1]中国科学院物理研究所,国家超导实验室,西北有色金属研究院

出　　处：《低温物理学报》1994年第5期405-408,共4页Low Temperature Physical Letters

摘　　要：我们在最低温度达４．２Ｋ，最高磁场达７Ｔ的范围内，测量了不同温度和磁场下的Ｉｅ．借助于和磁场关系图，我们假定Ｂ＊是上临界场，其值由趋向了零条件决定．最大钉扎力均位于相同的约化磁场值而与测量温度无关．Ｆｐ（Ｈ，Ｔ）速从一个简单的函数关系Ｆｐ＝１．３×１０１０（１－ｔ）３．６ｂ０．８（１－ｂ）２．AbstractWe have measured the Ic behaviors of Bi (2223)/Ag tape at varied temperatures down to 4.2K and magnetic fields up to 7T. By poltting the pinning force Jc1/2B1/4 vs field, we assume B as the up critical field which is determined by that Jc1/2B1/4 goes to zero. At different temperature,the max pinning force occurred at the same value of the reduced field regardless of temperature.Fp(H,T) can be reduced to a simple function Fp= 1. 3 ×1010(1- t)3.6bo.8(1 - b)2.

关 键 词：铋2223 复合超导体 磁通钉扎 标度 

分 类 号：O511.1[理学—低温物理]