NiFe_(2-x)Sm_xO_4纳米丝的制备与磁性能  

Preparation and Magnetic Properties of NiFe_(2-x)Sm_xO_4 Nanowires

作　　者：戴剑锋[1,2] 刘鹏[2] 王青[2] 李维学[2] Dai Jianfeng;Liu Peng;Wang Qing;Li Weixue(State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;School of Science, Lanzhou University of Technology, Lanzhou 730050, China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [2]兰州理工大学理学院,甘肃兰州730050

出　　处：《中国稀土学报》2018年第3期280-285,共6页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金项目(11664023)资助

摘　　要：采用溶胶-凝胶法、静电纺丝技术和热处理技术相结合制备了一维NiFe_(2-x)Sm_xO_4(x=0,0.02,0.04,0.06,0.08,0.1)纳米丝。利用X射线衍射仪(XRD)、傅立叶变换红外光谱仪(FT-IR)、扫描电子显微镜(SEM)和振动样品磁强计(VSM)对NiFe_(2-x)Sm_xO_4纳米丝的结构、形貌和磁性能进行表征。结果表明:NiFe_(2-x)Sm_xO_4纳米丝表面光滑、直径均匀、连续,直径约60 nm。掺杂Sm^(3+)没有改变NiFe_2O_4的尖晶石结构,随着Sm^(3+)掺杂量的增大,晶粒尺寸D从44.8 nm减小到19.6 nm。NiFe_(2-x)Sm_xO_4纳米丝表现出软磁特性。随着Sm^(3+)掺杂量的增大,NiFe_(2-x)Sm_xO_4纳米丝的饱和磁化强度(Ms)、剩余磁化强度(Mr)和矫顽力(Hc)先减小后增大,在x=0.08时分别达到最小值22.54,2.98emu·g^(-1),90.33 Oe。The one-dimensional Ni Fe2-xSmxO4（ x = 0,0. 02,0. 04,0. 06,0. 08,0. 1） nanowires were made by sol-gel method,electrospinning technique and heat treatment technology. The structure,morphology and magnetic properties of NiFe2-xSmxO4 nanowires are characterized by X ray diffractometer（ XRD）,Fourier transform infrared spectrometer（ FT-IR）,scanning electron microscope（ SEM） and vibration sample magnetometer（ VSM）. The result showed that the nanowires＇ surface is smooth and the diameter of the nanowires is about 60 nm which is continuous and symmetrical. With the increase of Sm^3＋ doping,the grain size D decreases from 44. 8 to 19. 6 nm. Doping Sm^3＋ does not change the spinel structure of NiFe2O4,which indicates a good quality of soft magnetic properties. With the increase of Sm^3＋ doping,Ms,Mrand Hcof NiFe2-xSmxO4 nanowires first decreases and then increases,respectively reaching the minimum value of 22. 54,2. 98 emu·g^-1,90. 33 Oe when x = 0. 08.

关 键 词：NiFe2-xSmxO4 静电纺丝 纳米丝 磁性能 

分 类 号：TM277[一般工业技术—材料科学与工程] O614.33[电气工程—电工理论与新技术]