Composition-controlled melt processing of Nd1+xBa2-xCu3O7-δ-based bulk material in air

被引：9

作者：

Schätzle, P ^{[1
]}

Ebbing, G ^{[1
]}

Bieger, W ^{[1
]}

Krabbes, G ^{[1
]}

机构：

[1] Inst Solid State & Mat Res Dresden, D-01171 Dresden, Germany

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2000年 / 330卷 / 1-2期

关键词：

phase diagram; substitution effects; magnetic susceptibility; critical current density; peak effect;

D O I：

10.1016/S0921-4534(99)00591-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nd(1+x)Ba(2-x)Cu(3)O(7-delta) (Nd-123) superconductors were melt-processed in air atmosphere starting from an initial precursor consisting of Nd(2)O(3), BaCuO(2) and CuO, or Nd-123 and BaCuO(2), respectively, to stabilise the process to proceed in equilibrium with compositions along the tie line Nd-123-Nd-422, both with its stoichiometric compositions. The Nd:Ba ratio was stabilised close to 1:2 and high T(c) values up to 96 K were achieved. As a result, J(c) values of 30 kA/cm(2) (0 T) and an expressed peak effect of 10 kA/cm(2) arises at an applied external magnetic field of 2 T at 77 K. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：19 / 26

页数：8

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