SYNTHESIS AND SUPERCONDUCTING PROPERTIES OF THE INFINITE-LAYER COMPOUNDS SR1-XLNXCUO2(LN=LA,ND,SM,GD)

被引：72
|
作者：
IKEDA, N [1 ]
HIROI, Z [1 ]
AZUMA, M [1 ]
TAKANO, M [1 ]
BANDO, Y [1 ]
TAKEDA, Y [1 ]
机构：
[1] MIE UNIV, FAC ENGN, DEPT CHEM, TSU, MIE 514, JAPAN
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1993年 / 210卷 / 3-4期
关键词：
D O I：
10.1016/0921-4534(93)90979-Z
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Infinite-layer-type superconductors Sr1-xLnxCuO2 are synthesized under high pressure of 3 GPa for Ln=Sm, Gd as well as for Ln = La, Nd. Their chemical and superconducting properties are systematically studied as functions of doping concentration and the kind of lanthanide ion. As a result, it is demonstrated that the variation of these properties with doping concentration is similar for all the examined Ln3+ ions. The solubility limit lies at x approximately 0.10. CuO2 sheets are expanded with increasing x, while their spacing decreases. The T(c) onset determined by magnetic measurements remains constant for any doping concentration; only the Meissner fraction increases with increasing x.
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页码：367 / 372
页数：6
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