SYNTHESIS METHOD, CONTROL OF CATIONIC COMPOSITION AND SUPERCONDUCTING BEHAVIOR OF ND1.85CE0.15CU1+/-DELTA-OY

被引：20

作者：

SERQUIS, A ^{[1
]}

PRADO, F ^{[1
]}

CANEIRO, A ^{[1
]}

机构：

[1] COMIS NACL ENERGIA ATOM, CTR ATOM BARILOCHE, RA-8400 BARILOCHE, RIO NEGRO, ARGENTINA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1995年 / 253卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(95)00529-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Samples of Nd1.85Ce0.15Cu1 +/- delta O-y (0.99 less than or equal to 1 +/- delta less than or equal to 1.02) were prepared by a solid-state reaction (SSR), nitrate-decemposition method (NDM) and liquid-mix method (LMM) and characterized by XRD, SEM, EPMA, DTA and DC magnetization. The control of Cu content, substitutional impurities and Ce homogeneity depends on the synthesis method, which modifies the microstructure and the superconducting behavior of these materials. Our results show that in Nd1.85Ce0.15Cu1 +/- deltaOy small variations of 6 strongly affect the superconducting properties. Far 1 + delta > 1.00 the Meissner fraction and the superconducting transition are substantially improved.

引用

页码：339 / 350

页数：12

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