Effect of Na-dopant on the Levitation Force of Single Domain YBCO Bulk Superconductors Fabricated by TSMTG Process

被引：3
|
作者：
Yang, W. M. [1 ]
Tang, Y. L. [1 ]
Li, G. Z. [1 ]
Chao, X. X. [1 ]
Ma, J. [1 ]
机构：
[1] Shaanxi Normal Univ, Dept Phys, Xian 710062, Shaanxi, Peoples R China
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2011年 / 24卷 / 08期
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
Na doping; YBCO bulk; Melt growth; Levitation force; MAGNETIC-FIELD; SYSTEM;
D O I：
10.1007/s10948-011-1183-8
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Na-doped single domain YBa2-x Na (x) Cu3O7-delta (YBCO, x=0.05, 0.1, 0.15, 0.2, 0.25, 0.3) bulk superconductors were prepared by a modified melt textured process and the effect of Na substitution on the levitation force of YBCO bulks have been investigated. The maximum levitation forces (MLF) are much different for samples with a different Na element content. It is found that the optimum Na element content in YBCO for the strong MLF is around x=0.2. It is also found that the addition of Na could reduce and increase the ATH of the YBCO platelet while x less than 0.1 and larger than 0.1, some of adjacent platelet grains are well intergrown each other in the sample with x=0.2 comparing to the other samples and the influence of the Na addition on the Y211 particle size is not obvious.
引用
收藏
页码：2211 / 2214
页数：4
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