DIRECT CRITICAL-CURRENT HIGHER THAN 1000-A IN A SUPERCONDUCTOR TEXTURED BY ZONE-MELTING IN A MAGNETIC-FIELD

被引：5

作者：

BARBUT, JM

BARRAULT, M

BOILEAU, F

INGOLD, M

BOURGAULT, D

DERANGO, P

TOURNIER, R

机构：

[1] LAB LEVITAT & FORCE MAGNET,CNRS,F-38042 GRENOBLE 9,FRANCE

[2] LAB CRYSTALLOG,F-380429 GRENOBLE,FRANCE

来源：

JOURNAL DE PHYSIQUE III | 1994年 / 4卷 / 11期

关键词：

D O I：

10.1051/jp3:1994266

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Texturation of YBa2Cu3O7-x has been achieved in a zone melting apparatus in a magnetic field. A strong vertical thermal gradient, along which samples are pulled; combined with a horizontal magnetic field of 5 teslas induces cristallite alignment with their (a, b) planes perpendicular to the magnetic field and parallel to the thermal gradient. At H = O T and T = 77 K, a dc current of 1 000 A passed through a multigrain sample of 13 mm2 section and 20 mm length, thus proving the quality of grain boundaries. 200 A currents also passed through in H = 8 T (H perpendicular-to I) for a large angular range between H and (a, b) planes. These preliminary results are encouraging for possible practical applications of large sized textured bar samples.

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收藏

页码：2149 / 2157

页数：9

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