SUPERCONDUCTIVITY OF LA2-YSRYCU1-XNIXO4+DELTA (Y=0.1, 0.2-0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.5) - THE HOLE-COMPENSATING EFFECT OF NI

被引：10

作者：

BHAT, V ^{[1
]}

RAO, CNR ^{[1
]}

HONIG, JM ^{[1
]}

机构：

[1] INDIAN INST SCI, SOLID STATE & STRUCT CHEM UNIT, BANGALORE 560012, KARNATAKA, INDIA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1992年 / 191卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(92)90658-Y

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetization measurements below 50 K on ceramic La2-ySryCu1-xNixO4+delta (y = 0.1, 0.2; 0 less-than-or-equal-to x less-than-or-equal-to 0.5) show a progressive diminution of superconducting properties with increasing x. The larger suppressive action of Ni in the y = 0.1 system than that for y = 0.2 is attributed to the hole-compensating effect of Ni3+. The assumption that nickel is in the 3+ state satisfactorily explains: (1) the reduction in hole concentration, (2) a right-shift of the T(c) versus y curve with x, and (3) the low magnetic moment carried by Ni atoms, in the La2-ySryCu1-xNixO4+delta system.

引用

页码：271 / 276

页数：6

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