Influence of Co content on the characterization and magnetic properties of magnetite

被引：31
作者：
Ahmed, M. A. [1 ]
Okasha, N. [2 ]
El-Dek, S. I. [1 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Phys, Mat Sci Lab 1, Giza, Egypt
[2] Ain Shams Univ, Dept Phys, Fac Girls, Cairo, Egypt
来源：
CERAMICS INTERNATIONAL | 2010年 / 36卷 / 05期
关键词：
Nanopowder: chemical preparation; Electron microscopy; Magnetic properties; Spinel; Magnetite; COBALT FERRITE PARTICLES; NANOPARTICLES; ANISOTROPY; FLUIDS;
D O I：
10.1016/j.ceramint.2010.02.017
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Preparation of nanosized Co(x)Fe(3-x)O(4); 0.05 <= x <= 0.20 particles from metal nitrates solution through citrate precursor method was performed. XRD pattern of all prepared systems showed single phase with cubic spinel structure. The crystallite size was determined from TEM and found to agree with that calculated from Sherrer's equation (60-76 nm) The magnetic constants such as molar magnetic susceptibility (chi(M)), Curie temperature (T(C)) and saturation magnetization (M(S)) were measured and the results indicated that, at x = 0.2 the values of chi(M), M(S), remanent magnetization (M(r)) and coercive field (H(c)) are 23 emu/g mol, 77.62 emu/g, 33.17 emu/g and 574.5 Oe, respectively. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：1529 / 1533
页数：5
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