YGdBCO/YBCO+BaHfO_(3)复合超导层的制备  

Preparation of YGdBCO/YBCO+BaHfO_(3)Composite Superconducting Layers

作　　者：肖晨飞 金利华[2] 柏阳 李成山[2] 赵高扬[1] XIAO Chengfei;JIN Lihua;BAI Yang;LI Chengshan;ZHAO Gaoyang(School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China;Superconducting Materials Research Center,Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China)

机构地区：[1]材料科学与工程学院西安理工大学,陕西西安710246 [2]超导材料研究所西北有色金属研究院,陕西西安710016

出　　处：《低温物理学报》2020年第3期141-144,共4页Low Temperature Physical Letters

基　　金：国家自然科学基金资助项目(51777172);陕西省自然科学基础研究项目(2017ZDJC-19)资助的课题。

摘　　要：采用脉冲激光沉积和化学溶液沉积相结合制备超导薄膜.在物理法制备的YGdBCO薄膜上实现化学法YBCO+BHO的同质外延生长.利用X射线衍射和扫描电镜对复合薄膜的相组成、织构和形貌进行了表征.结果表明,采用化学溶液沉积可以在YGdBCO层上制备出高性能的YBCO+BHO薄膜.复合薄膜具有良好表面形貌和锐利织构,而且复合薄膜在77 K、1 T的磁场下Jc为0.3 MA/cm^(2),最大钉扎力达到3 GN/m^(3).The Superconducting films were fabricated by the combination of pulse laser deposition(PLD) and chemical solution deposition(CSD) methods. The homogeneity growth of YBCO+BaHfO3 film could be achieved by solution deposition on the surface of PLD-YGdBCO film. The phase composition, texture and microstructure of composite films were characterized by X ray diffraction and scanning electron microscopy. The result showed that the high performance of YGdBCO/YBCO+BHO composite films could be acquired by CSD. The composite films demonstrated homogeneous surface morphology, sharp texture and high critical current density of 0.3 MA/cm^(2) at 77 k and 1 T and the maximum flux pinning force of 3 GN/m^(3).

关 键 词：钇钡铜氧 脉冲激光沉积 化学溶液沉积 复合薄膜 

分 类 号：TB383.2[一般工业技术—材料科学与工程]