提拉法制备Sm_(0.2)Ce_(0.8)O_(1.9)单层缓冲层及其性能研究(英文)  

Preparation and Performance of the Sm_(0.2) Ce_(0.8) O_(1.9-x) Single Buffer Layer Fabricated with Dip-Coating

作　　者：雷鸣[1] 王文涛[1] 蒲明华[1] 何龙健[1] 程翠华[2] 赵勇[1,2] 

机构地区：[1]西南交通大学教育部磁悬浮与磁悬浮列车重点实验室,四川成都610031 [2]新南威尔士大学,澳大利亚悉尼2052

出　　处：《稀有金属材料与工程》2013年第2期227-231,共5页Rare Metal Materials and Engineering

基　　金：Fundamental Research Funds for the Central Universities of China(SWJTU09ZT24, SWJTU09BR153, SWJTU09CX055, SWJTU11ZT16, SWJTU11ZT31);National Natural Science Foundation(50872116, 51072168, 51102199, 51202202, 51271155);the PCSIRT of the Ministry of Education of China(IRT0751);the Specialized Research Fund for the Doctoral Program of Higher Education(200806130023);National Magnetic Confinement Fusion Science Program(2011GB112001);Program of International S&T Cooperation(S2013ZR0595);Science Foundation of Sichuan Province(2011JY0031, 2011JY0130)

摘　　要：在双轴织构的Ni-5%W合金基带上,采用高分子辅助化学溶液沉积法通过提拉涂敷法,制备了厚度达250nm的Sm_(0.2)Ce_(0.8)O_(1.9)(SCO)外延织构单层缓冲层。通过严格控制前驱溶液的浓度、提拉速度、成相温度和热处理时间,所获的SCO单层缓冲层涂层平整、无微裂纹、且具有较强的(200)c轴外延织构。在其他条件假设不变的情况下,主要研究不同提拉速度对SCO缓冲层薄膜性能的影响。在此基础上,采用化学溶液法在SCO/NiW缓冲层上制备了YBCO超导层,其具有高度的双轴织构和均匀的表面形貌。结果表明:用提拉法获得的SCO单层缓冲层在具有适度的厚度下,仍然具有很好的织构传递特性,为低层本制造YBCO涂层导体长带提供了一条可靠的路线。An epitaxial Sm0.2Ce0.8O1.9-x （SCO） single buffer layer with thickness of about 250 nm has been deposited via dip-coating polymer-assisted chemical solution deposition （PACSD） approach for YBCO coated conductors on bi-axially textured Ni-5%W （200） alloy substrate. Flat, crack-free SCO films with sharp （200） c-axis orientation and texture have been obtained by carefully controlling the concentration of precursor solution, withdrawing speed, annealing temperature and dwelling time. Leaving other three factors unchanged, focuses on the influence of different withdrawing speeds on the performance of the SCO buffer layer has been focused on. YBCO superconducting layer has been deposited equally via dip-coating PACSD approach on the SCO-buffered NiW, showing a bi-axially texture. Micro-structural investigations revealed a homogeneous surface structure. Both of these indicate that SCO single buffer layer can function well as template. The approach has shown a promising way to fabricate long-length, low-cost YBCO coated conductors.

关 键 词：SM0 2Ce0 8O1 9-x(SCO) 高分子辅助化学溶液沉积 提拉法 

分 类 号：O611.3[理学—无机化学]