摘要
利用溶胶-凝胶旋涂法制备了纳米CoFe2O4/SiO2复合薄膜.利用X射线衍射仪、原子力显微镜、振动样品磁强计对样品的结构和磁性进行了研究.结果表明,随着退火时间的延长,样品中CoFe2O4的晶粒尺寸和晶格常数变大.随着晶粒尺寸的增加,样品的矫顽力变大,当退火温度为3 h时,样品垂直和平行膜面的矫顽力分别为246 kA·m-1和198 kA·m-1,样品具有较明显的垂直磁各向异性.
CoFe2O4/SiO2 nanocomposite films were prepared by sol-gel spin coating process.The structure,morphology and magnetic properties of the films have been studied through X-ray diffractometer（XRD）,atomic force microscope（AFM） and vibrating sample magnetometer（VSM）.The results show that the grain size and lattice constant of CoFe2O4 increases with extension of annealing time.The coercivity increases with the increase of the grain size.The film possesses perpendicular magnetic anisotropy with out-of-plane coercivity of 246 kA·m-1 and in-plane coercivity of 198 kA·m-1 when the annealing time is 3 h.
出处
《吉林师范大学学报（自然科学版）》
2011年第1期40-42,共3页
Journal of Jilin Normal University:Natural Science Edition
基金
吉林省科技发展计划项目(20090144)
关键词
溶胶-凝胶法
钴铁氧体
纳米复合薄膜
结构
磁性
sol-gel method
cobalt ferrite
nanocomposite thin film
structure
magnetic property
