PREPARATION OF HIGH-T(C) SUPERCONDUCTING (BI,PB)2SR2CA2CU3OY PHASE VIA AN OXALATE ROUTE

被引：14
|
作者：
CHANG, HSW
SHEEN, SR
CHEN, DH
CHANG, CT
KAO, CH
HUANG, JC
CHOU, YC
HSIEH, YC
HSIEH, YH
WU, MK
机构：
[1] NATL TSING HUA UNIV,DEPT CHEM,HSINCHU 30043,TAIWAN
[2] ACAD SINICA,INST ATOM & MOLEC SCI,TAIPEI 10764,TAIWAN
[3] NATL TSING HUA UNIV,CTR MAT SCI,HSINCHU 30043,TAIWAN
来源：
MATERIALS LETTERS | 1993年 / 16卷 / 06期
关键词：
D O I：
10.1016/0167-577X(93)90205-C
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(Bi,Pb)2Sr2Ca2Cu3Oy (2-2-2-3) (above 90%) has been prepared at a sintering temperature of 852-degrees-C within 10 h by sol-gel processing. Plate-like fine crystalline (Bi,Pb)2Sr2CaCu2Oz (2-2-1-2) (a-b plane diameter 1 mum, c direction thickness 0.1 mum) powder was used to prepare this 2-2-2-3 phase material. The 2-2-1-2 powder was prepared by a metal oxalate reaction using metal nitrate as metal sources, ethanol as solvent, and organic compounds as chelating agents to prepare the sol, and followed by a series of drying and calcination processes. The fine crystalline 2-2-1-2 powder was obtained at a temperature of 800-degrees-C for 10 h. T(c) (onset) of this 2-2-2-3 phase material was 105 K and T(c)(zero) was 92 K, which was obtained by pelleting the powder and measuring the resistivity by the four-probe method.
引用
收藏
页码：342 / 346
页数：5
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