Effects of the Nd4Ba2Cu2Oy phase on texturing and properties of melt-textured NdBa2Cu3Oy

被引：8
|
作者：
Hu, AM
Zhao, ZX
Xiong, JW
Pang, C
机构：
[1] Natl. Laboratory for Superconducting, Institute of Physics, Chinese Academy of Sciences
来源：
PHYSICA C | 1997年 / 288卷 / 1-2期
关键词：
melt-textured materials; NdBa2Cu3Oy; levitation force;
D O I：
10.1016/S0921-4534(97)01489-5
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A series of melt-textured NdBa2Cu3Oy bulks with controlled amount of Nd4Ba2Cu2Oy additions has been fabricated by the newly developed technology. The optimal formation temperature increases with increasing the amount of Nd4Ba2Cu2Oy addition. Also a remarkable enhancement of the magnetic levitation force is induced by Nd4Ba2Cu2Oy addition. The optimal amount of Nd4Ba2Cu2Oy can be expressed as Nd4Ba2Cu3Oy + 0.4Nd(4)Ba(2)Cu(2)O(y). SEM studies show that microcracks in the bulks can be effectively reduced by Nd4Ba2Cu2Oy particles. The enhancement of the magnetic levitation force is attributed to the suppression of weak links in grains. (C) 1997 Elsevier Science B.V.
引用
收藏
页码：136 / 140
页数：5
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