溶胶-凝胶法制备FePt纳米颗粒及其性质研究  

Preparation and Properties Study of FePt Nanoparticles by Sol-gel Method

作　　者：刘洋[1] 姜雨虹[1] 张小龙[1] 魏茂斌[1] 王雅新[1] 杨景海[1] 

机构地区：[1]吉林师范大学物理学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2012年第2期18-20,共3页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林省科技厅青年科研基金项目(201201083);吉林省教育厅"十一五"科学技术研究项目(2010144);吉林师范大学2011年度博士科研启动项目(吉师博2011018)

摘　　要：通过溶胶-凝胶法制备了L10相FePt纳米颗粒,并利用X射线衍射(XRD)、振动样品磁强计(VSM)、透射电子显微镜(TEM)等测试手段对所制备的样品进行了结构和磁性表征.XRD及TEM分析表明,700℃所制备的FePt纳米颗粒为面心四方(FCT)结构,颗粒形状为球形且分散性较好,晶粒尺寸约为12 nm.磁性测试结果表明,L10相的FePt纳米颗粒室温下具有铁磁性,其矫顽力为1 887 Oe.In this letter,we fabricated ordered L10 FePt nanoparticles by sol-gel method.Structure and magnetic properties of the samples were characterized by x-ray diffraction（XRD）,transmission electron microscopy（TEM） and vibrating sample magnetometer（VSM）.The results of XRD and TEM indicated,the prepared FePt nanoparticles annealed at 700 ℃ were faced centered tetragonal（FCT） structure.The spherical particles were separated and monodisperse.The particle size of FePt nanoparticles was about 12 nm.VSM results indicated L10 FePt nanoparticles were ferromagnetic at the room temperature,and the coercivity was 1887 Oe.

关 键 词：FEPT纳米颗粒 制备 X射线衍射 

分 类 号：O482.54[一般工业技术—材料科学与工程]