Magnetic and electrical properties of nickel-zinc ferrites doped with bismuth oxide

被引：60

作者：

Pal, M ^{[1
]}

Brahma, P ^{[1
]}

Chakravorty, D ^{[1
]}

机构：

[1] INDIAN ASSOC CULTIVAT SCI,CALCUTTA 700032,W BENGAL,INDIA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1996年 / 152卷 / 03期

关键词：

D O I：

10.1016/0304-8853(95)00483-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bismuth-substituted nickel-zinc ferrites have been synthesized by a solution route in the composition range Ni0.5Zn0.5BixFe2.0-xO4, with 0 less than or equal to x less than or equal to 0.2. X-ray diffraction data indicate that bismuth most likely exists in the Bi5+ state within the spinel structure. The saturation magnetization is found to decrease as the bismuth concentration is enhanced. This can be explained on the basis of two sublattices in the spinel structure, with Bi5+ ions replacing some of the Fe2+ ions. The variation of the electrical conductivity with temperature is explained using small polaron hopping between Fe2+ and Fe3+ sites.

引用

页码：370 / 374

页数：5

共 7 条

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