Ca、Zn掺杂对高温超导体YBa_2Cu_3O_(7-δ)晶体结构的影响  

Effect of Ca and Zn Doping on the Structure of YBa_2Cu_3O_(7-δ)

作　　者：郝艳玲[1] 龚秀[1] 张星[1] 

机构地区：[1]兴义民族师范学院,贵州兴义562400

出　　处：《兴义民族师范学院学报》2012年第6期106-108,120,共4页Journal of Minzu Normal University of Xingyi

基　　金：贵州省教育厅自然科学研究项目(20090099);黔西南州科技局科技计划项目(2012-2);兴义民族师范学院科研项目(11xyyz04;11xyxs01)资助项目

摘　　要：采用固相反应法成功的制备出了Y1-yCayBa2Cu3-xZnxO7-δ(y=0,x=0;y=0.1,x=0,0.05,0.1,0.2)的系列样品。利用X射线衍射(XRD)和扫描电镜(SEM)对所制备系列样品结构进行了研究。结果表明,在整个掺杂范围内样品的单相性很好。随着锌离子掺杂量的增加,样品的晶格常数和表面形貌都发生了较大的变化,这是因为掺杂使样品的电子局域化增加,从而使样品的结构发生变化。A series of Y1-yCayBa_2Cu_3-xZnxO_7-δ（y=0,0.1,x=0,0.05,0.1,0.2） superconductor samples were prepared by solid- state reaction method. The crystal structure of the samples was measured by X-ray diffraction （XRD） and Scanning electricity mirror （SEM）o The X-ray diffraction pattern for all the samples revealed single phase. The Results showed that the change of crystal lattice and appearance with the increasing of the doping content can be explained by the localization of electrons.

关 键 词：YBCO超导体 固相反应法 X射线衍射 扫描电镜 

分 类 号：O511[理学—低温物理]