Fabrication and microstructural control of high current ReBa2Cu3O7 current leads (Re=Y, Nd, Sm)

被引：2

作者：

Granados, X

Yu, R

Martinez, B

Pinol, S

Sandiumenge, F

Vilalta, N

Carrera, M

Gomis, V

Obradors, X

机构：

[1] Institut de Ciéncia de Materials de Barcelona, CSIC, Campus U.A. Barcelona

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1997年 / 7卷 / 02期

关键词：

D O I：

10.1109/77.620917

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The potential of YBCO superconductors for the development of current leads has been hindered by the difficulties in the fabrication of long single domain bars which exhibit much higher the critical current density than that for the BSCCO counterpart, In this work we report that very long single domain (10 cm x 0.4 cm) self sustained vertical bars can be directionally solidified by using additives such as CeO2, The influence of the processing rate has been investigated and we show that current leads which are able to carry a current higher than 2500 A can be fabricated. Quality factors of these bars such as homogeneity, critical current, thermal conductivity and resistance of ohmic contacts are evaluated. At the same time we report the growth conditions of long bars of ReBa2Cu3O7 (Re=Nd,Sm) in air and we investigate the relationship between microstructure and superconducting properties.

引用

页码：1743 / 1746

页数：4

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