水热法合成铁酸镍纳米磁性粉体及表征  

Solvothermal Synthesis and Characterization of Nickel Ferrite Nanoparticles by Hydrother-mal Method

作　　者：木提拉·阿曼[1] 拜山·沙德克[1] 谢木西丁·阿布拉[1] 阿斯叶古丽·吾布力卡丝木[1] 

机构地区：[1]新疆大学物理科学与技术学院,新疆乌鲁木齐830046

出　　处：《新疆大学学报（自然科学版）》2012年第2期195-198,210,共5页Journal of Xinjiang University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(11164027);新疆维吾尔自治区高校科研计划立项项目(XJEDU2010I05)

摘　　要：用水热法合成了平均粒径44nm的铁酸镍纳米磁性粉体.样品物相用X射线衍射仪和能量分散普(EDS)表征,形貌通过透射电镜(TEM)和扫描电镜(SEM)观测.所得样品的磁性用振动样品磁强计(VSM)测试.结果显示所制备的纳米NiFe_2O_4粉体具有铁磁性特征,其饱和磁化强度M_s为49.3 emu/g,剩余磁化强度M_r为8.5emu/g,矫顽力H_c为54.7Oe.Nickel ferrite nanocrystals, with average particle size of 44 nm, were prepared by a hydrothermal method. The structure and morphologies of the as-prepared products were characterized by conventional techniques such as X-ray diffraction （XRD）, Energy Dispersive Spectrometry （EDS）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The magnetic properties of the samples were characterized on a vibrating sample magnetometer （VSM）. The results showed that the as-prepared particles are ferromagnetic and its saturation magnetization Ms is 49.3emu/g, remnant magnetization Mτ is 8.5emu/g and coercive force Hc is 54.7Oe.

关 键 词：水热法 NIFE2O4 纳米磁性颗粒 

分 类 号：O782.1[理学—晶体学]