Flux Pinning in Y1-xMxBa2Cu3O7-δ (M=Gd, Eu and Sm) System

Li Jonghen,Fang Minghu,Hu Gangjin,Zhang Xiao-Jun,Jiao Zheng-Kuan,Zhang Qirui,Zhang Yi-Tong,Jin Xin,Yao Xi-Xian

Chinese Physics Letters（1992）

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摘要

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.

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