Influence of annealing temperature on the formation, microstructure and magnetic properties of spinel nanocrystalline cobalt ferrites

被引：123

作者：

Ai, Lunhong ^{[1
]}

Jiang, Jing ^{[1
]}

机构：

[1] China W Normal Univ, Coll Chem & Chem Engn, Lab Appl Chem & Pollut Control Technol, Nanchong 637002, Peoples R China

来源：

CURRENT APPLIED PHYSICS | 2010年 / 10卷 / 01期

关键词：

Magnetic materials; Chemical synthesis; Ferrite; Magnetic properties; NANOPARTICLES; POWDER;

D O I：

10.1016/j.cap.2009.06.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline cobalt ferrites were synthesized by a simple, general, one-step sol-gel auto-combustion method. An interpretation based on the measurement of the adiabatic flame temperature and the amounts of gas evolved during reaction had been proposed for the nature of combustion. The influence of annealing temperatures on the magnetic properties was investigated. The microstructure was characterized by means of X-ray diffractometer (XRD) and transmission electron microscopy (TEM). It was found that the particle size and magnetic properties of the as-prepared ferrite samples showed strong dependence on the annealing temperature. The coercivity initially increased and then decreased with increasing annealing temperature whereas the particle size and saturation magnetization continuously increased. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：284 / 288

页数：5

共 24 条

[1]

[Anonymous], 1997, PRERRYS CHEM ENG HDB

[2] Further insights in the conductivity behavior of nanocrystalline NiFe2O4 [J].