溶胶凝胶法制备Nd^(3+)掺杂纳米Ni-Zn铁氧体的结构和性能  

Structure and performance of sol-gel prepared Nd^(3+)-doped Ni-Zn ferrite with nanoparticles

作　　者：戴剑锋[1,2] 王泽昕 戴怡乐[2] 张歌[2] 王青[2] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料重点实验室,甘肃兰州730050 [2]兰州理工大学理学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2013年第6期11-14,共4页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(50873047)

摘　　要：采用凝胶溶胶法制备Ni0.6Zn0.4Fe2-x Ndx O4(x=0.01,0.02,0.03)纳米晶,以柠檬酸作为络合剂并将前驱体在1 073K煅烧2h.通过X射线衍射(XRD)和傅里叶变换红外吸收光谱(FT-IR)表征样品的结构,结果表明:Fe3+已经被Nd3+替位,随着Nd3+掺杂含量的增加,晶粒尺寸减小,晶格常数增大.透射电镜(TEM)表明,纳米晶有规则的形貌和尺寸.通过振动样品磁强计(VSM)对样品的饱和磁化强度(Ms)和矫顽力(Hc)进行测试(室温下),结果表明,当x值为0.01时样品的Ms最高,Hc的值随x值增大而减小.Ni0.6Zn0.4 Fe2-xNdxO4 （x=0.01,0.02,0.03） ferrite nanocrystals were prepared with sol-gel method and citric acid was used as complexing agent to calcine the precursor at 1 073 K for 2 h.The structure of investigated sample was characterized with X-ray diffraction （XRD） and Fourier transform infrared （FT-IR） absorptive spectrum.The result indicated that the Fe3＋ ions were substituted by Nd3＋ ions,meanwhile with the increase of the Nd3＋ content,the grain size decreased and the lattice constant increased.Transmission electron microscopic （TEM） test demonstrated that the nanocrystals were regular in size and shape.The saturation magnetisation （Ms） and coercivity （Hc） values of the samples were tested with vibrating sample magnetometer （VSM） at room temperature.The VSM result revealed that the nanoparticles of the samples would have maximum Ms when the value of x was 0.01,the value of Hc would decrease with the value of x increased.

关 键 词：NI-ZN铁氧体 溶胶凝胶法 Nd3+掺杂 

分 类 号：TB33[一般工业技术—材料科学与工程] TM271[电气工程—电工理论与新技术]