A new superconductor with 1222 structure (Cu1-xMx)Sr2(Y1-yCey)2Cu2Oδ(M = Ti, V, Cr, Fe, Co, Ga, Ge, Mo, Ce, W and Re)

被引：8

作者：

Tamura, M ^{[1
]}

Sato, M

Den, T

Akimitsu, J

机构：

[1] Aoyama Gakuin Univ, Dept Phys, Setagaya Ku, Tokyo 157, Japan

[2] Canon Res Ctr, Atsugi, Kanagawa 24301, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1998年 / 303卷 / 1-2期

关键词：

superconductor; cuprates; Cu; 1222; structure;

D O I：

10.1016/S0921-4534(98)00216-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We systematically synthesized (Cu, M)-1222 cuprates, (Cu1-xMx)Sr-2(Y1 -yCey)(2)Cu2Odelta (M = Ti, V, Cr, Fe, Co, Ga, Ce, Mo, Ce, W and Re), and succeeded for the first time in synthesizing new 1222 compounds with M = Ti, V, Cr, Co, Ge, W and Re. All samples except for the compound with Fe show superconductivity, giving the highest T-c similar to 43 K for annealed M = Re sample ((Cu0.85M0.15)Sr-2(Y0.75Ce0.25)(2)Cu2Oepsilon). We compared the T-c's with the crystal structures and investigated the difference between annealed and as-sintered samples. We point out here that T-c is related to the valencies of the M-elements and the O-Cu-O angle in the CuO2 planes. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：1 / 10

页数：10

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