EFFECT OF COOLING RATE OF BI2SR2CA1CU2OX MELT ON THE SUPERCONDUCTING PROPERTIES OF THE RESULTANT POLYCRYSTALLINE CERAMICS

被引：5

作者：

LEE, WH ^{[1
]}

HOSONO, H ^{[1
]}

NAKAMURA, K ^{[1
]}

ABE, Y ^{[1
]}

机构：

[1] NAGOYA INST TECHNOL,DEPT ELECT & COMP ENGN,NAGOYA,AICHI 466,JAPAN

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)91319-Y

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting Bi2Sr2Ca1Cu2Ox ceramics can be prepared via melting-quenching-reheating (crystallization) process. It is found that the superconducting properties of the resultant polycrystalline ceramics were remarkably affected by the cooling rate of the melt; the as-cast rods were substantially glassy or spontaneously devitrified, depending on the cooling rate. When the both glassy and devitrified precursor specimens were reheated at 750-870-degrees-C, T(c) and J(c) of the latter resultant ceramics with large crystallites were much higher than those of the former with small crystallites.

引用

页码：2389 / 2390

页数：2

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