ENHANCEMENT OF THE CRITICAL CURRENT OF AG8TL2BA2CA2CU3O10 BY COMPRESSIVE REORIENTATION

被引：4

作者：

QI, M

WANG, JH

机构：

[1] SUNY BUFFALO,DEPT CHEM,BUFFALO,NY 14214

[2] SUNY BUFFALO,NEW YORK STATE INST SUPERCONDUCT,BUFFALO,NY 14214

来源：

PHYSICA C | 1991年 / 176卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90692-R

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting samples of bulk composition Ag8Tl2Ba2Ca2Cu3O10 with zero-resistance T(c) of 118-122 K were prepared by a three-step procedure. The sample was cut into thin rectangular slices and subsequently forced to reorient its grains by compression in the z direction while allowing the sample to expand freely in the x and y directions. Compressive deformation of the sample under 44 kbar pressure was found to raise its transport critical current density at 77 K from 1.1 x 10(2) to 1.3 x 10(3) A/cm2. The compressive deformation raised the magnetic critical current density at H = 0.1 T from 4.5 x 10(2) to 3.4 x 10(3) A/cm2 at 77 K and from 2.0 x 10(4) to 1.6 x 10(5) A/cm2 at 5 K. DC susceptibility measurements also showed enhancement of magnetic anisotropy of the deformed sample.

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页码：38 / 42

页数：5

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