Phase development of Bi-2212 superconductor: A time-resolved neutron powder diffraction investigation

被引：6

作者：

Argyriou, DN ^{[1
]}

Garcia, JA ^{[1
]}

Mitchell, JF ^{[1
]}

Jorgensen, JD ^{[1
]}

Hinks, DG ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV SCI MAT,ARGONNE,IL 60439

来源：

JOURNAL OF MATERIALS RESEARCH | 1996年 / 11卷 / 02期

关键词：

D O I：

10.1557/JMR.1996.0032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Time-resolved in situ neutron powder diffraction and Rietveld refinement have been used to study the synthesis of Bi-2212 from hydroxide precursors in a 2% O-2 atmosphere. Bi-2212 was found to form within the temperature range 770-800 degrees C, Studies at 800 degrees C show that Bi-2212 grows rapidly at the expense of Bi-2201. Upon lowering the temperature to 500 degrees C and changing the atmosphere to Ar, a rapid increase in the lattice parameters was observed. We attribute this change to the loss of oxygen from the Bi-2212 lattice. The final material exhibited a T-c of 94 K.

引用

页码：277 / 280

页数：4

共 13 条

[1] SYNTHESIS OF HIGH-TC SUPERCONDUCTING BI-PBSR-CA-CU-O CERAMICS PREPARED BY AN ULTRASTRUCTURE PROCESSING VIA THE OXALATE ROUTE [J].