摘要
采用普通固态反应法制备了名义组分为Bi_(2.0-x)Pb_xSr_(1.9)Ca_(2.2)Cu_(3.3)Oy超导体,并系统研究了样品的X射线衍射谱。结果表明:富Ca富Cu加速了2223相形成,拓宽了Bi系的单相化烧结温区,并获得了品质优良的110K单相多晶样品;低温退火有助于提高样品的单相化程度。
The superconductors with nominal composition of Bi2.0-xPbxSr1.9Ca2.2 Cu3.3O, were prepared by solid-state reaction method, XRD patterns were systematically studied for the samples. The results indicated that rich-Ca, Cu could accelerate the formation of (2223) phase, and broaden the sintering temperature range for a single phase. High-quality polycrystalline sample of 110K single phase was obtained. Annealing at lower temperature is beneficial to increase the volume ratio of 110K phase.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第7期1157-1161,共5页
Acta Physica Sinica
基金
国家超导技术联合研究开发中心资助的课题
