Role of copper on structural, magnetic and dielectric properties of nickel ferrite nano particles

被引：26

作者：

Balavijayalakshmi, J. ^{[1
]}

Suriyanarayanan, N. ^{[2
]}

Jayaprakash, R. ^{[3
]}

机构：

[1] PSGR Krishnammal Coll Women, Dept Phys, Coimbatore 641004, Tamil Nadu, India

[2] Govt Coll Technol, Dept Phys, Coimbatore, Tamil Nadu, India

[3] Sri Ramakrishna Mission Vidyalaya Coll Arts & Sci, Dept Phys, Nanotechnol Lab, Coimbatore, Tamil Nadu, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 385卷

关键词：

Co-precipitation; Nanoparticles; FT-IR; Coercivity; Vibrating Sample Magnetometer; Sintering; CITRATE PRECURSOR METHOD; GEL AUTO-COMBUSTION; ZN FERRITES; ZN1-XNIXFE2O4;

D O I：

10.1016/j.jmmm.2015.03.036

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Copper doped nickel ferrites Ni(1-x)CuxFe2O4 (where x=0.2, 0.4, 0.6) nanoparticles are prepared by coprecipitation method and sintered at 600 degrees C. The XRD study confirms the formation of single-phase cubic spinet Ni-Cu ferrites. The particle size increases with Cu substitution. FT-IR spectra confirm the absorption bands around 554-547 cm(-1) for the tetrahedral sites and around 448-450 cm(-1) for the octahedral sites. The inclusion of copper shifts the tetrahedral band to lower values. The saturation magnetization (M-s) and remanent magnetization (M-r) decrease with increase in copper concentration and the coercivity (H-c) is found to increase for all the compositions sintered at 600 degrees C. The dielectric constant decreases drastically for all the compositions and reaches a constant value. These nanoparticles can be tested for humidity sensing applications. (C) 2015 Elsevier B.V. All rights reserved

引用

页码：302 / 307

页数：6

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