Preparation and magnetic properties of NiFe2O4/T-ZnOW composites
-
摘要: 采用化学镀法在四角氧化锌晶须(T-ZnOW)表面包覆NiFe2O4镀层, 制备了NiFe2O4/T-ZnOW复合材料。利用X射线衍射仪、 扫描电镜、 能谱分析仪、 振动样品磁强计对镀覆前后T-ZnOW的结构、 形貌等进行了表征。结果表明, 化学镀覆后, 在T-ZnOW表面包覆了致密的尖晶石型NiFe2O4镀层, T-ZnOW针尖部位生成的镀层厚度比根部薄。NiFe2O4/T-ZnOW复合材料具有软磁特性。随着退火温度的升高, 复合材料的饱和磁化强度和矫顽力逐渐升高, 在800℃达到最高。Abstract: NiFe2O4/T-ZnOW composites were prepaired by encapsulating T-ZnOW with an NiFe2O4 film through ferrite electrodeless plating. The composites were characterized by X-ray analyses (XRD), scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS). The magnetic properties were measured by vibrating sample magnetometer (VSM). The results indicate that the surface of T-ZnOW is covered with a compact layer of NiFe2O4, and the coating on the needlepoint is thinner than that on the root of T-ZnOW The composites exhibit excellent ferromagnetic behavior. The saturation magnetization and coercive force increase with the annealing temperature, and reach the peak at 800℃.
-
Key words:
- microwaving absorbing materials /
- T-ZnOW /
- NiFe2O4 /
- ferrite plating /
- magnetic properties
点击查看大图
计量
- 文章访问数: 1701
- PDF下载量: 985
- 被引次数: 0