Effects of Flux Creep on the Magnetization Curves of High-Temperature Superconductors

Chin. Phys. Lett.

1998, Vol. 15

Issue (6): 450-452 DOI:

Original Articles

Effects of Flux Creep on the Magnetization Curves of High-Temperature Superconductors

WEI Chong-de

Department of Physics, Peking University, Beijing 100871

Cite this article:

WEI Chong-de 1998 Chin. Phys. Lett. 15 450-452

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Abstract The effects of flux creep on the magnetization curves of high-temperature superconductors are investigated numerically for Anderson-Kim model. The pinning energy at zero current density, U_c, greatly influences the flux penetration process, a larger U_c, value reults in a larger penetration field. The characteristic of the magnetization curve is also a function of U_c. The magnetization M and ΔM increase with the increasing U_c and depend on the magnetic induction B, so the critical current formula based on Bean model is pot accurate, especially for high-T_c superconductor, for which flux creep is a large effect.

Keywords: 74.70.Mj

Published: 01 June 1998

PACS:

74.70.Mj

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1998/V15/I6/0450

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