【作者】 张翠萍； 冯勇； 汪京荣； 徐晓燕； A.Sulpice； 周廉；

【Author】 Zhang Cuiping Feng Yong Wang Jingrong Xu Xiao yanA. Sulpice Zhou Lian(Northwest Institute for Non-ferrous Metal Research, P. O. Box 51 Xi’ an,710016) (CRTBT,CNRS,BP 166,8042 GRENOBLE Cedex 9 FRANCE)

【机构】 西北有色金属研究院； CRTBT,CNRS,BP 166,8042 GRENOBLE Cedex 9 FRANCE；

【摘要】 对GdBCO超导块材的捕获磁通(Btr)比YBCO高的原因给出解释。GdB-CO超导块材的捕获磁通性能可能来自两个方面:一是由磁通钉扎引起的超导环流产生的超导钉扎捕获磁通(Btr-sup),二是顺磁磁化形成的捕获磁通(Btr-para)。其捕获磁通可以表示为:Btr=Btr-sup+Btr-para。更多还原

【Abstract】 We found the trapped magnetic field Btr of bulk GdBCO is higher than that of YBCO. We explained this phenomenon with the para magnetization of bulk GdBCO. And the magnetization of Gd is contributed to the trapped magnetic field Btr of GdBCO. It was suggested that the trapped field Btr of bulk REBCO superconductor come of two aspects: 1 ) Superconducting trapped magnetic field Btrs which roused from the superconducting current induced in the CuO layer. 2) Magnetized trapped field Btrp that roused from the magnetization of RE atom. The Btr of superconductor REBCO is as Btr = Strs( superconducting) + Btrp(paramagnetism).更多还原