SITE-SELECTIVE SUBSTITUTION EFFECT ON TC IN THE BI2(SR2-XCAX)(CA0.8RARE-EARTH0.2)CU2O8+Y SYSTEM

被引：23

作者：

FUJIKAMI, J

YOSHIZAKI, R

AKAMATSU, M

ISHIGAKI, T

ASANO, H

机构：

[1] UNIV TSUKUBA,INST MAT SCI,TSUKUBA,IBARAKI 305,JAPAN

[2] UNIV TSUKUBA,CTR CRYOGEN,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYSICA C | 1991年 / 174卷 / 4-6期

关键词：

D O I：

10.1016/0921-4534(91)91570-T

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to investigate the factors governing the superconducting transition temperature, T(c), other than the carrier concentration, we examined the double doping effects in the 2212-phase Bi-cuprate with maintaining the optimum carrier concentration corresponding to maximum T(c). The variable parameters are the Sr-Ca solution rate x at the Sr site and the kind of rare-earth, R(= Y, La, Nd, Eu, Gd, Dy, Yb or Lu), at the Ca site. T(c) decreased systematically with increasing x as well as with increasing the ionic radius of the doped rare-earth. We estimated the individual dependence of T(c) on the Sr-Ca solution rate and on the distance of the CuO2 double layers.

引用

页码：359 / 364

页数：6

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