Hg vapor pressure, phase stability, and synthesis of Hg1-xBa2Can-1CunO2n+2+delta with n<=3

被引：29

作者：

Xue, YY ^{[1
]}

Meng, RL ^{[1
]}

Lin, QM ^{[1
]}

Hickey, B ^{[1
]}

Sun, YY ^{[1
]}

Chu, CW ^{[1
]}

机构：

[1] UNIV HOUSTON,DEPT PHYS,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204

来源：

PHYSICA C | 1997年 / 281卷 / 01期

基金：

美国国家科学基金会;

关键词：

synthesis of; substitution effects; HgBa2Can-1CunO2n+2+delta;

D O I：

10.1016/S0921-4534(97)00376-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The stability of Hg1-xBa2Can-1CunO2n+2+delta[Hg12(n - 1)n] and its competing phase, HgCaO2, at synthesis temperatures were studied in terms of their equilibrium Hg vapor pressure P-Hg. It was found that the stability of Hg12(n - 1)n varies with n in a complex way. It was also observed that traces of moisture and/or carbon dioxide reduce the P-Hg of Hg HgCaO2, while partially substituting Re, Pb and Mo for Hg suppresses the P-Hg of Hg12(n - 1)n. Possible relationships between the beneficial substitution effect, the change of cation valence, and the defect structures in Hg12(n - 1)n are proposed. (C) 1997 Elsevier Science B.V.

引用

页码：11 / 16

页数：6

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