FORMATION MECHANISM OF 110-K HIGH-TC SUPERCONDUCTING PHASE IN THE CA-RICH AND CU-RICH BI-PB-SR-CA-CU-O SYSTEM

被引：43

作者：

HUANG, YT ^{[1
]}

SHEI, CY ^{[1
]}

WANG, WN ^{[1
]}

CHIANG, CK ^{[1
]}

LEE, WH ^{[1
]}

机构：

[1] CHUNG SHAN INST SCI & TECHNOL, TAOYUAN 32526, TAIWAN

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1990年 / 169卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(90)90291-L

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The starting compositions of Bi1.7Pb0.4Sr2-xCa2+xCu3.6Oy (x≥0) have been studied to illustrate the formation mechanism of 110 K superconducting phase. It was proposed that a reactive liquid-phase-aided sintering process is responsible for the promotion of 110 K phase in the Pb-doped Bi-Sr-Ca-Cu-O system. The Ca-rich stoichiometry containing more Ca2PbO4 in calcined powder would result in more reactive liquid phase during the sintering period. The acceleration of the formation of 110 K phase and large grain growth were observed. A nearly monophasic 110 K superconducting phase can be easily obtained within 20 h when appropriate stoichiometry and sintering conditions were met. © 1990.

引用

页码：76 / 80

页数：5

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