CRYSTALLIZATION OF A BI-PB-SR-CA-CU-O SYSTEM PREPARED BY A MELT PROCESS

被引：14

作者：

HWANG, CH ^{[1
]}

KIM, G ^{[1
]}

机构：

[1] UNIV KOREA,FAC SCI,DEPT PHYS,KODAIRA,TOKYO 187,JAPAN

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1992年 / 5卷 / 10期

关键词：

D O I：

10.1088/0953-2048/5/10/005

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We prepared Bi1.6Pb0.4Sr2Ca2+2xCu3+xOy (x = 0.1 and 0.2) ceramics by a melt-quenching process, and examined crystallization behaviour. The activation energies of crystallization for the amorphous Bi1.6Pb0.4Sr2Ca2.2Cu3.1Oy and Bi1.6Pb0.4Sr2Ca2.4Cu3.2Oy were obtained by means of the Kissinger method; these values correspond to 477 and 468 kJ mol-1 respectively. The values of the activation energies for the amorphous Bi-system ceramics were a little bit larger than those of the amorphous alloys. The amorphous Bi-Pb-Sr-Ca-Cu-O ceramic was crystallized by heating in sequence though the phases: amorphous, semiconducting Bi2Sr2Cu1Oy, low-T(c) superconducting Bi2Sr2Ca1Cu2Oy and high-T(c) superconducting Bi2Sr2Ca2Cu3Oy.

引用

页码：586 / 590

页数：5

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