Novel Functions of Silver on Superconducting Properties for RE123 Melt-Solidified Bulks

被引:13
|
作者
Nakashima, Takayoshi [1 ]
Ishii, Yui [1 ]
Katayama, Takato [1 ]
Ogino, Hiraku [1 ]
Horii, Shigeru [1 ]
Shimoyama, Jun-ichi [1 ]
Kishio, Kohji [1 ]
机构
[1] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan
关键词
D O I
10.1088/1742-6596/97/1/012007
中图分类号
O59 [应用物理学];
学科分类号
摘要
The intrinsic effects of Ag-addition on crystal structure and superconducting properties of Y123 melt-solidified bulks have been investigated. Increased c-axis length and decreases of maximum T-c and carrier density caused by Ag-addition suggested the incorporation of Ag into the Y123 matrix, in which Ag+ was considered to substitute for Cu ion of Cu-O chain. It was also found that Ag-addition enhanced J(c) properties all applied fields at 77 K. The distinct second peak of J(c) observed for the Ag-added bulk suggested that the Ag-incorporated regions acted as effective pinning centers under disordered vortex lattice.
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页数:4
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