Effects of the sintering atmosphere on the superconductivity of SmFeAsO1-xFx compounds

被引：2

作者：

Ding, Y. ^{[1
]}

Sun, Y. ^{[1
]}

Dwang, X. ^{[1
]}

Zhuang, J. C. ^{[1
]}

Cui, L. J. ^{[1
]}

Shi, Z. X. ^{[1
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2011年 / 24卷 / 09期

关键词：

OXYPNICTIDE SUPERCONDUCTORS;

D O I：

10.1088/0953-2048/24/9/095014

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A series of SmFeAsO1-xFx samples were prepared in quartz tubes filled with air of different pressures. The effects of the sintering atmosphere on the superconductivity were systematically investigated. The SmFeAsO1-xFx system maintains a transition temperature (T-c) near 50 K until the concentration of oxygen in the quartz tubes increases to a certain threshold, after which T-c decreases dramatically. Fluorine losses, whether due to vaporisation, reactions with starting materials or reactions with oxygen, proved to be detrimental to the superconductivity of this material. The deleterious effects of the oxygen in the sintering atmosphere were also discussed in detail.

引用

页数：5

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