摘要
超顺磁性的Fe3O4纳米颗粒,因其具有许多独特的性质和潜在的应用前景,引起了人们的极大关注,是材料研究领域的一个持续热点.采用共沉淀法制得纳米Fe3O4,通过XRD、SEM等对样品进行表征,用VSM对样品进行磁性能测试.结果表明所得样品为纯反尖晶石结构的Fe3O4球形颗粒,平均粒径约为15nm.磁性能测试表明当外加磁场为6 kOe时,Fe3O4纳米粒子的磁化达到饱和,饱和磁化强度为63 A.m2.kg-1.在室温下,所制Fe3O4纳米粒子显示典型的超顺磁性,在生物医学、磁记录材料、磁流体复合材料、催化剂等方面有着潜在的应用前景.
The superparamagnetic Fe3O4 nanoparticle has been attracting great attention and is an important topic in the field of advanced materials,owing to its many unique properties and potential applications.In this paper,the superparamagnetic Fe3O4 nanoparticles were synthesized by the coprecipitation method,the prepared samples were characterized by X-ray diffraction（XRD） and scanning electron microscopy（SEM）,the magnetic properties measurement was performed by VSM.The results indicate that the average diameter of the spherical Fe3O4 with pure anti-spinel structure is 15 nm,and that magnetization of the magnetic powders get to saturation,the saturated magnetization is 63 A·m2·kg-1 when the external field is at 6 kOe.The prepared Fe3O4 nanoparticles show a typical superparamagnetism at room temperature,there are enormous potential applications for the superparamagnetic Fe3O4 nanoparticles in various fields,such as biomedicine,information storage,magnetic fluids,catalysts,and so on.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第3期385-387,共3页
Journal of Sichuan Normal University（Natural Science）
基金
四川省教育厅自然科学重点基金(07ZC004)资助项目
关键词
FE3O4
纳米粒子
制备
表征
magnetite
nanoparticle
preparation
characterization
