HIGHLY REPRODUCIBLE HIGH CRITICAL-CURRENT DENSITY IN PARTIAL-MELT BI2SR2CACU2OY/AG TAPES FABRICATED BY ELECTROPHORETIC DEPOSITION

被引：25

作者：

HUANG, SL

DEWHUGHES, D

YANG, M

MORGAN, C

GROVENOR, CRM

GORINGE, MJ

JENKINS, R

STOREY, R

JONES, H

ZHENG, DN

CAMPBELL, AM

ASTILL, DM

机构：

[1] UNIV OXFORD,DEPT MAT,OXFORD OX1 3PH,ENGLAND

[2] UNIV OXFORD,CLARENDON LAB,HIGH FIELD SUPPORT GRP,OXFORD OX1 3PU,ENGLAND

[3] UNIV CAMBRIDGE,IRC SUPERCONDUCT,CAMBRIDGE CB3 0HE,ENGLAND

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1995年 / 8卷 / 01期

关键词：

D O I：

10.1088/0953-2048/8/1/006

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Highly c-axis-oriented Bi2Sr2CaCu2Oy/Ag tapes with high critical current density (J(c)) were prepared by electrophoretic deposition followed by partial-melt processing. Slow cooling at 0.2 degrees C min(-1) from the partial-melt temperature and a subsequent prolonged annealing at 825-830 degrees C resulted in an almost phase-pure highly textured microstructure in the samples fabricated from partly reacted precursor powder. The transport J(c) can be improved to 1.7 x 10(4) A cm(-2) at 77 K, and, at 4.2 K, 3.0 x 10(5) A cm(-2) (l(c) = 470 A for a 6 mm wide sample) and 1.3 x 10(5) A cm(-2) with zero and 15 T applied magnetic induction, respectively. Values of J(c) were reproducible to within 10% for samples that experienced the same heat treatment and were of similar thickness.

引用

页码：32 / 40

页数：9

共 31 条

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