EFFECT OF PIN DISTRIBUTION ON DC VOLTAGE-CURRENT CHARACTERISTICS OF A SUPERCONDUCTING FOIL IN THE PRESENCE OF A SMALL AC FIELD

被引：0

作者：

SAKAMOTO, N ^{[1
]}

YAMAFUJI, K ^{[1
]}

机构：

[1] KYUSHU UNIV,DEPT ELECTR,FUKUOKA 812,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 1979年 / 18卷 / 08期

关键词：

D O I：

10.1143/JJAP.18.1587

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To show that the distribution of the pinning force in a superconducting foil exerts a significant influence upon the dc voltage-current characteristic in the presence of a low-frequency ac magnetic field, observation was carried out in a foil sample with a surface-pinning layer made by evaporating a material with a higher critical current. As a result, a noticeable shoulder appeared in the dc voltage curve, as has been found in some foil samples. Theoretical expressions of the dc voltage are also derived from the critical-state model and the results show satisfactory agreement with experimental data. This provides the possibility of obtaining the pin distribution profile in a superconducting ribbon by observation of dc voltages. © 1979 IOP Publishing Ltd.

引用

页码：1587 / 1595

页数：9

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