MOD法在BaPbO_3/LaAlO_3上沉积YBa_2Cu_3O_(7-σ)层的研究  

Research on preparation of YBa_2Cu_3O_(7-σ) layers on BaPbO_3/LaAlO_3 by MOD

作　　者：高锋[1] 李凤华[1] 王娜[1] 李英楠[1] 樊占国[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004

出　　处：《低温与超导》2008年第7期25-28,共4页Cryogenics and Superconductivity

基　　金：国家自然科学基金委员会青年科学基金(50702012);辽宁省博士启动基金(20071017)资助

摘　　要：实验配制了一种新型的YBCO前驱溶液,经过旋转涂覆和适当的热处理工艺,在单晶LaAlO3(100)基底和以BaPbO3为缓冲层的LaAlO3基底两种结构上外延生长YBa2Cu3O7-σ(YBCO)超导层。XRD结果表明:在两种结构上均生长了单相的YBCO层,YBCO晶粒沿垂直于基底表面的c轴方向外延生长。这种择优性在以BaPbO3为缓冲层的YBCO结构中更加明显。SEM结果表明,在两种结构上均形成致密的YBCO层。The superconductive layers of YBCO were prepared on the substrates of single crystal LaAlO3 （100）and BaPbO3 buffered LaAlO3 respectively by a spin- coating method with a new type precursor solution and a suitable heat treatment process. By XRD analysis, single phase of YBCO was prepared on either of these two kinds of configurations through suitable heat-treat- ment process. These YBCO films all exhibitedc-axis-oriented peaks in direction perpendicular to the surface of substrate. The peaks were stronger as BaPbO3 films were used as the buffer layer between YBCO and LaAlO03. By SEM observation, dense layers of YBCO were got.

关 键 词：BAPBO3 MOD YBCO 缓冲层 超导体 

分 类 号：TN304.055[电子电信—物理电子学] TM912.1[电气工程—电力电子与电力传动]