PREPARATION OF YBA2CU3O7-X SUPERCONDUCTOR BY COPRECIPITATION OF NANOSIZE OXALATE PRECURSOR POWDER IN MICROEMULSIONS

被引：37

作者：

KUMAR, P ^{[1
]}

PILLAI, V ^{[1
]}

BATES, SR ^{[1
]}

SHAH, DO ^{[1
]}

机构：

[1] UNIV FLORIDA,CTR SURFACE SCI & ENGN,DEPT MAT SCI,GAINESVILLE,FL 32611

来源：

MATERIALS LETTERS | 1993年 / 16卷 / 2-3期

关键词：

D O I：

10.1016/0167-577X(93)90026-T

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We describe a new technique for the synthesis of ultra-homogeneous nanoparticles of precursor oxalate powders by coprecipitation in the aqueous cores of water-in-oil microemulsions for the preparation of YBa2Cu3O7-x (1-2-3) oxide superconductors. This novel technique ensures uniform mixing of cations down to the scale of 10 nm. This ultrafine powder results in phase pure ''1-2-3'' oxide superconducting material of almost theoretical density and > 93% Meissner shielding expected from an ideal sample (-1/4pi) after proper heat treatment.

引用

页码：68 / 74

页数：7

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