Y-Ba-Cu-O高Tc超导体的核技术研究  

The investigation of high Tc superconductor Y-Ba-Cu-O by nuclear techniques

作　　者：刘荣川[1] 滕敏康[1] 王广厚[1] 沈德勋 夏元复[1] 

机构地区：[1]南京大学

出　　处：《核技术》1989年第8期533-536,共4页Nuclear Techniques

基　　金：国家自然科学基金

摘　　要：本文报道用穆斯堡尔谱学和X射线衍射研究YBa_2(Cu_(1-x)Fe_x)_3O_7的结构和超导性质以及铁置换的影响;用正电子湮没技术研究Y-Ba-Cu-O高T_c超导体,发现T_c区域正电子湮没寿命谱性质异常;用质子和电子束分别对Y-Ba-Cu-O超导体的体材和不同衬底的超导薄膜进行辐照试验,获得了一些新的结果。Structure and superconductivity of YBa2(Cu1-xFex)3O7,and The influence of Fe-substi-tution on the high TC superconductivity were investigated by Mossbauer spectroscopy and X-ray diffraction. Abnormal behaviors of positron annihilation in the ceramic superconductor Y-Ba-Cu-O in the transition temperature region were found and The radiation effects of electrons and protons on this ceramic superconductor were studied.

关 键 词：超导体 穆斯堡尔谱 正电子湮没 

分 类 号：TM262[一般工业技术—材料科学与工程]