Magnetic susceptibility of some mixed-metal compounds NBu(4)Fe(II)[Fe(III)(x)Cr(III)(1-x)(ox)(3)]

被引：24
|
作者：
Bhattacharjee, A [1 ]
Iijima, S [1 ]
Mizutani, F [1 ]
机构：
[1] NATL INST BIOSCI & HUMAN TECHNOL,DEPT BIOMOLEC ENGN,TSUKUBA,IBARAKI 305,JAPAN
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1996年 / 153卷 / 1-2期
关键词：
D O I：
10.1016/0304-8853(95)00485-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic susceptibility behavior of the mixed-metal molecular-based compounds NBu(4)Fe(II)[Fe(III)(x)Cr(III)(1-x)(ox)(3)] has been investigated in the temperature range 5-290 K. The compounds exhibit a crossover from ferromagnetic ordering for NBu(4)Fe(II)[Cr(III)(ox)(3)] to ferrimagnetic ordering for NBu(4)Fe(II)[Fe(III)(ox)(3)] as a function of concentration. The increasing substitution of Cr(III) ions by Fe(III) ions showed gradual increases in T-N and in the value of the Curie-Weiss constant. The compounds with x > 0.4 have been found to exhibit a spin-glass-like behavior in the temperature region below the magnetic transition temperature. The coexistence of a disordered structure and competition between the ferromagnetic and ferrimagnetic interactions could lead to the observed spin-glass-like behavior in these compounds.
引用
收藏
页码：235 / 240
页数：6
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