Pinning Potential and Critical Current Densities in Powder Melting Processed Y(Ho)BCO Samples

Chin. Phys. Lett.

1993, Vol. 10

Issue (11): 688-691 DOI:

Original Articles

Pinning Potential and Critical Current Densities in Powder Melting Processed Y(Ho)BCO Samples

LIU Peng^1,2;LI Jingwei¹;YIN Bo¹;GUO Shuquan¹;ZHAO Zhongxian¹;FENG Yong³;ZHOU Lian³

¹National Laboratory for Superconductivity, Institute of Physics, Academia Sinica, Beijing 100080 ²Department of Physics, Shanxi Normal University, Xian 710062 ³Northwestern Institute for Non-ferrous Metal Research, Baoji 721014

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LIU Peng, LI Jingwei, YIN Bo et al 1993 Chin. Phys. Lett. 10 688-691

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Abstract Magnetic relaxation and magnetization of the powder melting Y_1-xHo_xBa₂Cu₃O₇ (x =0.2, 0.4 and 0.6) samples have been measured at the temperature of 70K. The pinning potential U and magnetization critical current density J_c have been obtained according to the Anderson-Kim model and Bean model. It is found that both U and J_c were influenced by doping Ho. In the sample with x = 0.4 the pinning potential U has a Value of 3.2eV when the field is equal to 1 kG and parallel to c-axis, which is the highest one we have known in the high T_c superconductors.

Keywords: 74.60.Mj 74.60.Ge 74.70.Vy

Published: 01 November 1993

PACS:	74.60.Mj
	74.60.Ge
	74.70.Vy

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1993/V10/I11/0688

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	LIU Peng
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