Search for novel high temperature superconducting materials: A new 126 K system, Ba2Can-1+xCun+yOz

被引：6

作者：

Chu, CW ^{[1
]}

Cao, Y ^{[1
]}

Du, ZL ^{[1
]}

Gao, L ^{[1
]}

Ross, K ^{[1
]}

Rusakova, I ^{[1
]}

Sun, YY ^{[1
]}

Wu, NL ^{[1
]}

Xue, YY ^{[1
]}

机构：

[1] UNIV HOUSTON, DEPT PHYS, HOUSTON, TX 77204 USA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)00209-8

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An approach in the search for high temperature superconductors with a T-c above 120 K without volatile toxic elements is proposed and its rationale is given. The compound system Ba2Can-1+xCun+yOz = (Ca-x,Cu-y)Ba2Can-1CunOz with a T-c up to 126 K has thus been successfully synthesized under high pressure and characterized. Another three superconducting phases at 90, 105, and 116 K, respectively, were also detected. The compound system offers a possibility for high temperature superconducting (HTSg) thin-film devices operable above 120 K, reachable in space by a passive cooler, when its stability is improved; and an opportunity to investigate the dimensionality effect on high temperature superconductivity.

引用

页码：57 / 60

页数：4

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