低温下旋转喷涂法制备Co_(0.6)Fe_(2.4)O_4铁氧体纳米薄膜的结构与磁性  

Microstructure and Properties of Co Ferrite Nano-film Prepared by Spin-spray Plating at Low Temperatures

作　　者：高原[1] 王学文[1] 周栋[1] 郑虹[1] 李发伸[1] 

机构地区：[1]兰州大学磁学与磁性材料教育部重点实验室应用磁学研究所,甘肃兰州730000

出　　处：《磁性材料及器件》2008年第2期12-14,25,共4页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金资助项目(90505007)

摘　　要：采用旋转喷涂法在低温下成功制备出结晶完整、无杂相的Co铁氧体纳米薄膜,并研究了反应温度、平台转速等实验参数对铁氧体薄膜制备及性能的影响。分别采用扫描电子显微镜、X射线衍射仪、振动样品磁强计和原子吸收光谱仪来表征样品的形貌、晶体结构、宏观磁性以及薄膜成分。实验发现,反应温度控制在90℃以上时,薄膜生长的反应才能进行完全,且适宜的平台转速为150r/min。在该条件下得到成分为Co0.6Fe2.4O4纳米薄膜的饱和磁化强度接近370kA/m,矩形比接近0.6,垂直膜面的矫顽力约为215kA/m。We have prepared the pure and completely crystallized Co ferrite nano-fihn by spin-spray plating at lower temperatures. The influence of reaction temperature, rotation speed and other experimental parameters on the microstructures and properties of the ferrite films were studied. The film surfaces, component, crystallographic and magnetic characteristics were evaluated using scanning electron microscope, atomic absorption spectrophotometer, X-ray diffractometer and vibrating sample magnetometer, respectively. It was found that the film growth reaction can be carried out under condition that the reaction temperature above 90℃ while the rotation speed was 150r/min. Co0.6Fe2.4O4 ferrite was prepared with saturation magnetization Ms of near 370kA/m, squareness of about 0.6 and perpendicular coercivity Hc⊥ of near 215 kA/m under such conditions.

关 键 词：钴铁氧体纳米薄膜 旋转喷涂 结构 磁性 

分 类 号：TM277[一般工业技术—材料科学与工程] O484.43[电气工程—电工理论与新技术]