Structural, electrical and magnetic properties of Co-Cu ferrite nanoparticles

被引：181
|
作者：
Hashim, Mohd. [1 ]
Alimuddin [1 ]
Kumar, Shalendra [2 ]
Koo, B. H. [2 ]
Shirsath, Sagar E. [3 ]
Mohammed, E. M. [4 ]
Shah, Jyoti [5 ]
Kotnala, R. K. [5 ]
Choi, H. K. [2 ]
Chung, H. [6 ,7 ]
Kumar, Ravi [8 ]
机构：
[1] Aligarh Muslim Univ, Dept Appl Phys, Aligarh 202002, Uttar Pradesh, India
[2] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, South Korea
[3] Vivekanand Coll, Dept Phys, Aurangabad 431001, Maharashtra, India
[4] Maharajas Coll, Dept Phys, Ernakulam 682011, Kerala, India
[5] Natl Phys Lab CSIR, New Delhi 110012, India
[6] Gyeongsang Natl Univ, Dept Precis & Mech Engn, Tongyeong 650160, South Korea
[7] Gyeongsang Natl Univ, Ecofriendly Heat & Cooling Energy Mech Res Team B, Tongyeong 650160, South Korea
[8] Natl Inst Technol, Ctr Mat Sci & Engn, Hamirpur 177005, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 518卷
基金：
新加坡国家研究基金会;
关键词：
Ferrite; Nanoparticles; Permittivity; Impedance spectroscopy; Magnetism; DIELECTRIC-PROPERTIES; SINTERING TEMPERATURE; ELECTRONIC-STRUCTURE; SUBSTITUTION; ABSORPTION; BEHAVIOR; PURE; MG;
D O I：
10.1016/j.jallcom.2011.12.017
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：
We report structural, electrical and magnetic properties of Cu doped Co ferrite nanoparticles prepared by sol-gel method. Analysis of structural properties has been carried out by using XRD and reveals that all samples have single phase cubic spinel structure. The permittivity (e), dielectric loss (tan delta) and ac conductivity (sigma(ac)) were determined at room temperature as a function of frequency. The results of dielectric properties indicated the normal Maxwell-Wagner type dielectric dispersion due to interfacial polarization. Complex impedance spectroscopic studies reveal that the conduction in these samples is through the grain boundaries. Room temperature magnetic hysteresis measurements infer that the saturation magnetization decreases with Cu doping which may be due to the difference of the magnetic moment of Cu and Fe ions. (C) 2011 Elsevier B. V. All rights reserved.
引用
收藏
页码：11 / 18
页数：8
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