SUPERCONDUCTIVITY IN THE HEXABORIDES

被引：19

作者：

SOBCZAK, RJ ^{[1
]}

SIENKO, MJ ^{[1
]}

机构：

[1] CORNELL UNIV,BAKER LAB CHEM,ITHACA,NY 14853

来源：

JOURNAL OF THE LESS-COMMON METALS | 1979年 / 67卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0022-5088(79)90088-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Powder samples of the mixed hexaborides (Y, La)B6 were prepared by borothermal reduction. The superconducting transition temperatures, as measured by static Faraday susceptibility and by Meissner flux expulsion, were observed to range from 6.0 ± 0.1 K for YB6 to 1.6 ± 0.1 K for Y0.5La0.5.5B6. The influence of the impurities ytterbium, cerium, neodymium, iron, barium and calcium was systematically examined. It appears that the very low critical temperature (0.1 K) of LaB6 is due to a small magnetic moment from the lanthanum itself. The change of lattice parameter only exerts a minor influence on the superconductivity. © 1979.

引用

页码：167 / 171

页数：5

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[9]

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