Fabrication and Magnetic Property of One-dimensional SrTiO_3/SrFe_(12)O_(19) Composite Nanofibers by Electrospinning

作     者：Qingrong Liang Xiangqian Shen Fuzhan Song Mingquan Liu 

作者机构：School of Material Science and Engineering Jiangsu University Zhenjiang 212013 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2011年第27卷第11期

页      面：996-1000页

核心收录：

学科分类：0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 50674048) Research Fund for the Doctoral Program of Higher Education of China (Grant No.20103227110006) Jiangsu Provincial Postgraduate Cultivation and In- novation Project (Grant No. CX10B-257Z) 

主　　题：Composite nanofibers Strontium ferrite Strontium titanate Electrospinning Magnetic property 

摘      要：The composite nanofibers of SrTiO3/SrFel2O19 with a molar ratio of 1：1 and diameter about 120 nm were prepared by electrospinning. Effects of calcination temperature on the formation, crystallite size, morphology and magnetic property were studied by infrared spectroscopy, X-ray diffraction, scanning electron microscopy and vibrating sample magnetometer. The binary phase of strontium ferrite and titanate was formed after being calcined at 900℃ for 2 h and the composite nanofibers were fabricated from nanograins of SrTiO3 about 24 nm and SrFel2O19 around 33 nm. The crystallite sizes for the nanofibers increase with increasing calcination temperature and the addition of SrTiO3 has an obvious suppression effect on SrFel2O19 grain growth. The specific saturation magnetization and remanence tend to increase with the crystallite size. With increasing calcination temperature from 900 to 1050℃, the coercivity increases initially, achieving a maximum value of 520.2 kA.m^-1 at 950℃, and then shows a reduction tendency.