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

doi:10.1088/0256-307X/9/12/012

Chinese Physics Letters

Flux Pinning in Y_1-xM_xBa₂Cu₃O_7-δ (M=Gd, Eu and Sm) System

Li Jonghen^1,2, Fang Minghu¹, Hu Gangjin¹, Zhang Xiaojun¹, Jiao Zhengkuan¹, Zhang Qirui¹, Zhang Yitong³, Jin Xin³ and Yao Xixian³

Published under licence by IOP Publishing Ltd
Chinese Physics Letters, Volume 9, Number 12 Citation Li Jonghen et al 1992 Chinese Phys. Lett. 9 667 DOI 10.1088/0256-307X/9/12/012

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¹ Department of Physics, Zhejiang University, Hangzhou 310027

² Department of Solid State Physics, Physics Faculty, Kim Il Sung University, Phyongyang 5-8171, D. P. R. Korea

³ Department of Physics, Nanjing University, Nanjing 210008

Dates

Received 18 May 1992

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Abstract

In this paper, the flux pinning effects in Y_1-xM_xBa₂Cu₃O_7-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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