Behavior of silver substitution in single-grain TSMG YBCO bulk superconductor

被引：13

作者：

Diko, P. ^{[1
]}

Antal, V. ^{[1
]}

Kanuchova, M. ^{[1
]}

Jirsa, M. ^{[2
]}

Jurek, K. ^{[2
]}

机构：

[1] Slovak Acad Sci, Inst Expt Phys, Kosice 04001, Slovakia

[2] Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague 8, Czech Republic

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷 / 02期

关键词：

Bulk YBCO superconductor; Ag doping; Solidification; Pinning;

D O I：

10.1016/j.physc.2009.11.177

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ag concentration in the single-grain TSMG Y(1)Ba(2)(Cu(1-x)Ag(x))(3)O(7) bulk superconductor with nominal Ag concentration for x = 0.05 was measured by WDX microprobe. The partition coefficient of Ag between Y123 crystal and the melt, k(Ag), was estimated to be k(Ag) = 0.1. It is also shown that the solubility of Ag in the Y(2)BaCuO(5) phase is below the WDX detection limit. As the measured Ag concentration is about four times higher than the concentration of Ag for optimum chemical pinning, the clustering of Ag atoms is supposed and a mechanism of Ag clustering is proposed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：155 / 158

页数：4

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