SrFe12-xRexO19(Re=Sm,Dy,Er)铁氧体纤维的制备及其磁性能

doi:10.3969/j.issn.1671-7775.2014.03.015

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摘要以聚乙烯吡咯烷酮、金属盐和稀土为原料,采用静电纺丝法成功制备了SrFe12-xRexO19(Re=Sm,Dy,Er)铁氧体纤维.通过TG-DSC,XRD,SEM,TEM和VSM等技术手段对前驱体复合纤维和目标纤维进行了表征．研究结果表明:稀土离子在SrFe12O19纤维晶格中的溶解度是有限的,稀土离子的引入抑制了铁氧体晶粒的生长;制备的SrFe12-xRexO19纤维表面光滑,主要由六角片状晶粒组成,晶粒尺寸在60 nm左右;比饱和磁化强度随稀土离子半径的增大和稀土掺量的增加而减小,矫顽力表现出相反的特征,表明稀土离子取代改变了铁氧体的晶格结构和磁晶各向异性．

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	孟献丰
	纪永康
	沈湘黔

关键词 ： M型锶铁氧体, 稀土, 纤维, 静电纺丝, 磁性能

Abstract：The spinel SrFe12-xRexO19(Re=Sm,Dy,Er)ferrite fibers were successfully prepared by electrospinning from raw materials of PVP, metal salts and rare earth. The samples were investigated by TG-DSC, XRD, SEM, TEM and VSM. The results show that the solubility is limited in the lattice structure of SrFe12O19 due to the growth inhibition of ferrite crystalline by rare earth ions. The ferrite fibers consisting of hexagonal platelike grain with size of 60 nm are obtained by optimized thermal treatment process. The Ms is decreased with the increasing of rare earth ion radius and doping amount, while Hc is increased. The lattice structure and magnetocrystalline anisotropy of SrFe12O19 ferrite can be changed by rare earth ion substitution.

Key words： Mtype strontium ferrite rare earth fiber electrospinning magnetic propert

基金资助:

国家自然科学基金资助项目(51202091); 中国博士后科学基金资助项目(2013M541612)

作者简介: 孟献丰(1978—),男,河南周口人,博士,副教授(mxf 2029@ujs.edu.cn),主要从事功能材料研究．纪永康(1989—),男,江苏淮安人,硕士研究生(853078133@qq.com),主要从事铁氧体材料研究．

引用本文:

孟献丰, 纪永康, 沈湘黔. SrFe12-xRexO19(Re=Sm,Dy,Er)铁氧体纤维的制备及其磁性能[J]. 江苏大学学报（自然科学版）, 2014, 35(3): 329-333. Meng Xianfeng, Ji Yongkang, Shen Xiangqian. Preparation and magnetic properties of SrFe12-xRexO19
(Re=Sm,Dy,Er)ferrite fiber[J]. Journal of Jiangsu University(Natural Science Eidtion) , 2014, 35(3): 329-333.

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http://zzs.ujs.edu.cn/xbzkb/CN/10.3969/j.issn.1671-7775.2014.03.015 或 http://zzs.ujs.edu.cn/xbzkb/CN/Y2014/V35/I3/329