Microstructure and magnetic properties of NiZn ferrite thin films prepared by sol-gel method
Ti4+ substitution for Fe3+ in Ni0.5Zn0.5Fe2O4 (NZF) ferrite thin films were realized by sol-gel method and annealing at 600 ℃ for 30 min in the air.Crystal structure and lattice constant determination was performed by X-ray diffractometer (XRD).Surface microstructure was observed by scanning electron microscope (SEM) and atomic force microscope (AFM),and the magnetic properties were measured by vibrating sample magnetometer (VSM).XRD analyses of the samples show that Ni0.5+xZn0.5TixFe2.2xO4 (NZTF) films with x varying from 0 to 0.15 in steps of 0.05 are composed of single phase with spinel structure.And the lattice parameter,particle size and the diffraction intensity of the films increase with substitution of Ti as the result of the larger radius ions entering the lattice.SEM and AFM show homogeneous grain size of each sample,but there is a few differences in grain size with different Ti-substitution contents.As the nonmagnetic Ti4+ substitutes Fe3+,both the saturation magnetization and coercivity decrease.
Ti-substitution NiZn ferrite thin films sol-gel method microstructure magnetic properties
NIE Xiao-liang LAN Zhong-wen YU Zhong SUN Ke LI Le-zhong
State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu 610054,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）