Effect of Y_2Ba_4CuWO_y Addition on the Properties of Single Domain YBCO Superconductors by TSIG Technique

作     者：Wan Feng, Yang Wanmin, Li Guozheng, Song Fang, Gao Ping, Liang Wei Shaanxi Normal University, Xi’an 710062, China 

作者机构：Shaanxi Normal Univ Dept Phys Xian 710062 Peoples R China 

出 版 物：《稀有金属材料与工程》 (Rare Metal Materials and Engineering)

年 卷 期：2011年第40卷第S3期

页      面：362-364页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：National Natural Science Foundation of China (51033026, 50872079) National High Technology Research and Development Program of China("863" Program, 2007AA03Z241) Fundamental Research Funds for the Central Universities (GK200901017) 

主　　题：single domain YBCO bulk top seeded infiltration and growth technique Y2Ba4CuWOy addition levitation force 

摘      要：Top seeded infiltration and growth technique (TSIG) is an effective method for the preparation of high quality large YBa2Cu3O7-x (YBCO) bulk superconductors. In this paper, single domain YBCO bulk superconductors, with different Y2Ba4CuWOy (YW2411) additions, have been fabricated by TSIG process. the solid phase pellet is made of a mixture of Y2BaCuO5(Y211) + xwt% YW2411 powders, x=0, 1, 3, 5, 7, 9. The growth morphology, microstructure and levitation force of the YBCO bulks have been investigated, it is found that the levitation force is increasing from 23.05 to 33.6 N with the increasing of YW2411 addition from 0 to 5wt%, and decreasing from 33.6 to 21.59 N with the increasing of YW2411 addition from 5 to 9wt%,the largest levitation force is obtained when the YW2411 content is about 5wt%. This is very important for us to fabricate high quality YBCO bulk superconductors.