PREPARATION OF HIGH-QUALITY BI-PB-SR-CA-CU OXIDE PRECURSOR BY THE CITRATE GEL PROCESS

被引：25

作者：

AOKI, A

机构：

[1] National Research Institute for Metals, Tokyo

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1990年 / 29卷 / 02期

关键词：

Ac susceptibility; Bi-Pb-Sr-Ca-Cu oxide; Citrate gel; De resistance; High- T[!sub]c[!/sub]superconductor; SEM; Thermal decomposition; X-ray fluorescence analysis; XRD;

D O I：

10.1143/JJAP.29.L270

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to achieve a high-Tcsuperconducting phase of Bi-Pb-Sr-Ca-Cu oxide, we applied a highly reactive citrate gel process to yield a precursor powder. A citrate-nitrate solution was dehydrated and heated to form the desired compound. We applied a thermogravimetric analysis, scanning electron microscopy and X-ray diffraction to study thermal decomposition during the heat stage. Sintered sample showed good superconducting properties with Tcabove 100 K. Chemical analyses revealed negligible loss of metals during the preparation procedure, indicating that the citrate gel process is an excellent and reliable method for this compound. © 1990 IOP Publishing Ltd.

引用

页码：L270 / L272

页数：3

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