Bi(Pb)SrCaCu氧化物超导晶须的生长及结构  

GROWTH AND STRUCTURE OF Bi(Pb)SrCaCu OXIDE SUPERCONDUCTING WHISKERS

作　　者：金华[1] 葛云龙[1] 刘清民[1] 胡壮麒[1] 师昌绪[1] 

机构地区：[1]中国科学院金属研究所,沈阳市110015

出　　处：《材料科学进展》1992年第1期23-27,共5页

基　　金：国家自然科学基金;958914

摘　　要：本工作将 Bi_2Pb_(0.5)Sr_2Cu_5O_x 的非晶态基材在流通氧气气氛中长期保温,获得了足以达到测量其多种物理性能的尺寸的晶须。用 X 射线衍射及电子衍射研究了晶须的结构,电探针和配有能谱的扫描电镜研究了晶须的成分及形貌。本文还讨论了不掺 Pb 元素及部分晶化的基材对晶须生长的影响。The superconducting whiskers which were long enough for the measurements ofmany physical properties have been prepared by heating an amorphous plate in a steady streamof oxygen atmosphere.The morphologies of the whiskers were observed by SEM;their crystalstructures were detected by X-ray diffractometer;and their compositions were analysed by elec-tron probe microanalysis(EPMA)and SEM equipped with energy spectroscopy(EDAX).Theresults show that the whiskers have remarkably oriented structures,and their crystal structuresare(2212)single phases,and their compositions approach Bi_2Sr_1Ca_1Cu_2O_x.The influence of par-tially crystallized substrate without Pb doping on the growth of whiskers has also been discussedbriefly.

关 键 词：晶须 非晶基材 超导体 氧化物 

分 类 号：TM262[一般工业技术—材料科学与工程]