Tailoring surface roughness of LaMnO_(3) buffer layers for YBCO-coated conductors  

作　　者：Chao Yang Yuan-Ying He Jun-Wei Chu Yan Xue Fei Zhang Wang Hui Bo-Wan Tao Jie Xiong 

机构地区：[1]State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China [2]Applied Research Laboratory of Superconduction and New Material, Institute of Electrical Engineering, Chinese Academy of Sciences

出　　处：《Rare Metals》2015年第12期859-863,共5页稀有金属（英文版）

基　　金：financially supported by the National Science Foundation of China(No.91421110);the National High Technology Research and Development Program of China(No.2014AA032702);the National Basic Research Program of China(No.2015CB358600);Sichuan Youth Science and Technology Innovation Research Team Fund(No.2011JTD0006);Sichuan Provincial Fund for Distinguished Young Academic and Technology Leaders(No.2014JQ0011)

摘　　要：LaMnO_(3)(LMO) cap layers with different surface roughness were prepared on epi-MgO/ion-beam-assisted deposition (IBAD) MgO/solution deposition planarized (SDP) Y₂O₃/Hastelloy tape. The effects of the surface roughness of LMO on the crystallization, texture and superconducting properties of Yba₂Cu₃O_7?δ (YBCO) films were systematically investigated. The crystallization and epitaxial texture of resulting YBCO film are significantly improved with the surface roughness of LMO decreasing from 7.0 to 1.3nm. High-performance YBCO-coated conductors could be achieved if surface roughness of LMO cap layer is well controlled.LaMnO_(3)(LMO) cap layers with different surface roughness were prepared on epi-MgO/ion-beam-assisted deposition (IBAD) MgO/solution deposition planarized (SDP) Y₂O₃/Hastelloy tape. The effects of the surface roughness of LMO on the crystallization, texture and superconducting properties of Yba₂Cu₃O_7?δ (YBCO) films were systematically investigated. The crystallization and epitaxial texture of resulting YBCO film are significantly improved with the surface roughness of LMO decreasing from 7.0 to 1.3nm. High-performance YBCO-coated conductors could be achieved if surface roughness of LMO cap layer is well controlled.

关 键 词：YBa_(2)Cu_(3)O_(7-δ)(YBCO) Coated conductors LaMnO_(3)cap Surface ROUGHNESS SUPERCONDUCTING properties 

分 类 号：TG174.4[金属学及工艺—金属表面处理]