EFFECT OF ZN, GA AND NI SUBSTITUTION ON THE SUPERCONDUCTING PROPERTIES OF THE ELECTRON DOPED SYSTEM ND-CE-CU-O

被引：24

作者：

FELNER, I

HECHEL, D

YARON, U

机构：

[1] Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem

来源：

PHYSICA C | 1990年 / 165卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(90)90199-O

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report experimental data about the influence of Zn, Ga and Ni substitution of Tc of the electron doped system Nd1.85Ce0.15Cu1-yMyO4-δ, 0≤y≤0.15. The relative suppression of Tc for a given dopant concentration decreases from Ni to Ga to Zn. Superconductivity is totally suppressed above y=0.01, 0.03 and 0.05 for M= Ni, Ga, Zn, respectively. The solubility of M=Fe in the matrix is extremely small. The effect of M=Ga3+ on Tc is similar to that of Ce4+. We compare doping results for magnetic and nonmagnetic ions and discuss the origin of the depression of Tc. The effect of these dopants on Tc in the Nd-Ce-Cu-O system is completely diffrent from that observed in the La-Sr-Cu-O system. © 1990.

引用

页码：247 / 250

页数：4

共 12 条

[1]

ABRIKOSOV AA, 1961, ZH EKSP TEOR FIZ, V12, P1243

[2] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].