Magnetic properties and cation distribution study of nanocrystalline Ni-Zn ferrites

被引：107

作者：

Shinde, T. J. ^{[1
]}

Gadkari, A. B. ^{[2
]}

Vasambekar, P. N. ^{[3
]}

机构：

[1] KRP Kanya Mahavidyalaya Islampur, Dept Phys, Islampur 415409, Maharashtra, India

[2] GKG Coll, Dept Phys, Kolhapur, Maharashtra, India

[3] Shivaji Univ, Dept Elect, Kolhapur, Maharashtra, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 333卷

关键词：

Ni-Zn ferrite; Co-precipitation technique; Nanostructure; Magnetic property; Cation distribution; TEMPERATURE; PERMEABILITY; RESISTIVITY; NANOPARTICLES;

D O I：

10.1016/j.jmmm.2012.12.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline spinel ferrites with general formula Ni1-xZnxFe2O4 (x=0-1.0) were prepared by an oxalate co-precipitation method. Magnetic properties were investigated by means of saturation magnetization, AC susceptibility, cation distribution and Curie temperature measurements. The saturation magnetization increases with increasing concentration of zinc up to x=0.4 and then decreases with increasing zinc concentration. Investigation of the Yafet-Kittel (Y-K) angles shows the existence of Neel's two sublattice model for x <= 0.2 and Y-K model for x >= 0.4 compositions. Variation of normalized AC susceptibility with temperature shows single domain particle nature for the compositions x <= 0.2, whereas multi-domain particle nature for the compositions x >= 0.4. Curie temperatures of the samples decrease with the increase in zinc concentration. Upadhayay's model is used to investigate the cation distribution and hence to calculate the Curie temperature. The composition for x=1 shows paramagnetic behavior at and above room temperature. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：152 / 155

页数：4

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