Flux Pinning in Y1-xMxBa2Cu3O7-δ(M=Gd, Eu and Sm) System
LI Jonghen*, FANG Minghu, HU Gangjin, ZHANG Xiaojun, JIAO Zhengkuan, ZHANG Qirui, ZHANG Yitong, JIN Xin, YAO Xixian
Department of Physics, Zhejiang University, Hangzhou 310027
*Permanent Address: Department of Solid State Physics, Physics Faculty, Kim I1 Sung University, Phyongyang 5-8171, D. P. R. Korea.
Department of Physics, Nanjing University, Nanjing 210008
Flux Pinning in Y1-xMxBa2Cu3O7-δ(M=Gd, Eu and Sm) System
LI Jonghen*;FANG Minghu;HU Gangjin;ZHANG Xiaojun;JIAO Zhengkuan;ZHANG Qirui;ZHANG Yitong;JIN Xin;YAO Xixian
Department of Physics, Zhejiang University, Hangzhou 310027
*Permanent Address: Department of Solid State Physics, Physics Faculty, Kim I1 Sung University, Phyongyang 5-8171, D. P. R. Korea.
Department of Physics, Nanjing University, Nanjing 210008
Abstract： In this paper, the flux pinning effects in Y1-xMxBa2Cu3O7-δ(M=Gd, Eu and Sm) samples are reported. It is found that there is another pinning mechanism under higher magnetic fields in addition to that under lower fields. This pinning effect may stem from the lattice stress field resulting from the partial substitution of the rare earth elements with different atomic radii for Y.
1992, Vol. 9 
