反应温度对NiCuZn铁氧体结构和磁性的影响Influence of reaction temperature on structure and magnetization of NiCuZn ferrite powders
张变芳,刘力虎,王振彪,申俊杰,李同锴
摘要(Abstract):
在反应温度分别为303,323和343K的条件下,用溶胶-凝胶法制备了三种Ni0.2Cu0.2Zn0.6Fe2O4铁氧体前驱体。然后把三种前驱体在873K烧结5h后,再在1273K烧结3h。借助于TG-DSC、XRD、SEM、VSM技术,对干凝胶的热分解过程、产物的物相、微观结构和磁性能进行研究。结果表明,反应温度为303K制备的NiCuZn铁氧体粉体为单一的尖晶石结构,而在反应温度为323和343K制备的两种粉体却是Ni0.2Cu0.2Zn0.6Fe2O4,、ZnO和Fe2O3混合体。
关键词(KeyWords): 铁氧体;前驱体;尖晶石结构;反应温度
基金项目(Foundation): 国家自然科学基金项目(50625518)
作者(Author): 张变芳,刘力虎,王振彪,申俊杰,李同锴
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