AC SUSCEPTIBILITY MEASUREMENTS - A QUALITY TEST FOR HIGH-T(C) SUPERCONDUCTING BULK MATERIALS

被引：5

作者：

BUEKENHOUDT, A ^{[1
]}

WEYTEN, H ^{[1
]}

DEVOS, P ^{[1
]}

SERVAES, F ^{[1
]}

CORNELIS, J ^{[1
]}

机构：

[1] UNIV ANTWERP,RUCA,ANTWERP,BELGIUM

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 195卷 / 1-2期

关键词：

D O I：

10.1016/0925-8388(93)90714-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Temperature dependent measurements of high T(c) bulk material reflect the quality of the high T(c) grains and the intergranular weak links. Besides, ac field dependent measurements give access to a quantitative quality label of the bulk material : its critical current density J(c). Herefore critical state models as the Bean and the Kim model are used. Our measurements on long orthorombic samples with different cross sections a x b show that the Kim model is the most realistic one. It leads to a b/a independent average value of J(c), which equals the J(c) value of transport measurements and of magnetic SQUID measurements at low dc fields.

引用

页码：177 / 180

页数：4

共 10 条

[1] MAGNETIZATION OF HIGH-FIELD SUPERCONDUCTORS [J].