ENHANCEMENT OF THE HIGH-TC PHASE IN BI-CA-SR-CU-O BY CERAMIC PROCESSING METHODS

被引：12

作者：

ASTHANA, A ^{[1
]}

HAN, PD ^{[1
]}

XU, Z ^{[1
]}

CHANG, L ^{[1
]}

PAYNE, DA ^{[1
]}

GILBERT, PJ ^{[1
]}

机构：

[1] UNIV ILLINOIS,SCI & TECHNOL CTR SUPERCONDUCT,URBANA,IL 61801

来源：

PHYSICA C | 1991年 / 174卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90418-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Materials in the Bi-Ca-Sr-Cu-O superconductor system were prepared by melt-quenching. Results were obtained for materials doped with small amounts of Pb and Sb. A substantial increase in the yield of the high-T(c) (2223) phase, with a corresponding improvement in superconducting properties, was noted for specimens heat-treated at 848-degrees-C in an atmosphere of 10% O2 and 90% Ar. The best specimens exhibited a T(c) (zero resistance) near 105 K and a large (approximately 90%) 2223 content. Experimental results are discussed in the context of phase and microstructure development, and the evolution of superconducting properties with heat-treatment.

引用

页码：33 / 39

页数：7

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