EFFECTS OF LANTHANOID SUBSTITUTION ON SUPERCONDUCTIVITY AND MODULATED STRUCTURE OF BI2SR2CUOY

被引：26

作者：

NAMEKI, H

KIKUCHI, M

SYONO, Y

机构：

[1] Institute for Materials Research, Tohoku University, Sendai

来源：

PHYSICA C | 1994年 / 234卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(94)90571-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The various lanthanoid-substituted Bi2201 phases, Bi2Sr2-xLnxCuOy, were prepared to examine oxygen content, structure and superconductivity. The difference of substituents with a fixed amount has little effect on the oxygen content and the lattice parameters, but strongly affects the superconductivity and the period of modulation. The maximum T(c) rapidly decreases from 27 K for La to 12 K for Eu with decreasing ionic radius of Ln3+, reaching 0 K for Ln = Gd, in contrast to rare-earth substitution in Bi2212 phase. The modulation period also changes remarkably with the different Ln3+ substitution, although the oxygen content remained almost the same.

引用

页码：255 / 262

页数：8

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