PROCESSING AND SUPERCONDUCTING PROPERTIES OF HIGH-JC BULK YBACUO PREPARED BY MELT PROCESS

被引：59

作者：

MORITA, M

MIYAMOTO, K

DOI, K

MURAKAMI, M

SAWANO, K

MATSUDA, S

机构：

[1] INT SUPERCONDUCT TECHNOL CTR,KOTO KU,TOKYO 135,JAPAN

[2] NAGOYA INST TECHNOL,GOKISO SYOUWA KU,NAGOYA,AICHI 466,JAPAN

来源：

PHYSICA C | 1990年 / 172卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(90)90632-O

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors tried to produce high critical current density (J(c)) bulk superconducting material by a melt process. It became clear that the grain boundary region acts as a weak-link and causes the low J(c) of the sintered material. It was found that highly oriented bulk material can be produced by a melt process in Y-Ba-Cu-O system. The authors obtained samples which contained many fine Y2BaCuO5 (211) phases and no grain boundary throughout a region of several tens of cubic millimeters. By magnetization measurements, it was found that J(c) exceeded 10(4) A/cm2 at 77 K and 1 T, which is a promising value for practical applications.

引用

页码：383 / 387

页数：5