The influence of La-substituted Cu0.5Co0.5Fe2O4 nanoparticles on its structural and magnetic properties
The influence of La-substituted Cu0.5Co0.5Fe2O4 nanoparticles on its structural and magnetic properties
复制标题
La取代的Cu0.5Co0.5Fe2O4纳米粒子对其结构和磁性能的影响
DOI：
10.1016/j.matdes.2015.04.029
复制
发表时间：
2015
影响因子：
8.4
通讯作者：
Yu Yang
中科院分区：
文献类型：
--
作者：
Lin Qing;Yuan Guangbai;He Yun;Wang Liping;Dong Jianghui;Yu Yang
采用溶胶-凝胶法制备了镧掺杂的钴铁氧体Cu0.5Co0.5Fe2− xLaxO 4（x= 0，0.01，0.03，0.05）粉末。X射线衍射（XRD）结果表明，生产的单相尖晶石结构。La ~（3+）离子的掺杂使晶格常数和晶粒尺寸减小。扫描电子显微镜（SEM）显示铁氧体粉体为纳米颗粒。Cu0.5Co0.5Fe2− xLaxO 4的室温穆斯堡尔谱是两个正常的塞曼分裂六重态，表现出亚铁磁行为。随着La ~（3+）的掺入，样品的饱和磁化强度、矫顽力和剩余磁化强度先增大后减小。
Lanthanum substituted cobalt ferrite Cu0.5Co0.5Fe2−xLaxO4(x= 0, 0.01, 0.03, 0.05) powders have been prepared by a sol–gel method. X-ray diffraction (XRD) results indicate the production of a single phase cubic-spinel structure. Both the lattice parameter and grain size decrease with the substitution of La3+ions. Scanning electron microscope (SEM) shows that the ferrite powers are nanoparticles. Room temperature Mössbauer spectra of Cu0.5Co0.5Fe2−xLaxO4are two normal Zeeman-split sextets, which display ferrimagnetic behavior. The saturation magnetization, coercivity and residual magnetization increase at first and then decrease with the incorporation of La3+.