Broadband high-impedance high-permeability manganese-zinc soft magnetic ferrite and preparation method thereof

The invention belongs to the technical field of magnetic materials, and provides broadband high-impedance high-permeability manganese-zinc soft magnetic ferrite and a preparation method thereof.The material comprises main components and auxiliary components, the main components comprise Fe2O3, ZnO and Mn3O4, and the auxiliary components comprise nano CaCO3, nano Bi2O3, nano Nb2O5 and SiO2. The preparation method of the material comprises the steps of burdening, mixing, pre-sintering, grinding, granulating, compression molding and spark plasma sintering, and the prepared soft magnetic ferrite has the characteristics of high impedance and high magnetic conductivity through integral control of the main components, the auxiliary components and the process method. 本发明属于磁性材料技术领域，本发明提供了一种宽频高阻抗高磁导率锰锌软磁铁氧体及其制备方法，该材料包含主成分和辅助成分，主成分为Fe2O3、ZnO、Mn3O4，辅助成分包括：纳米CaCO3、纳米Bi2O3、纳米Nb2O5、SiO2。该材料的制备方法包括配料、混合、预烧、研磨、造粒、压制成型和放电等离子烧结，通过主成分、辅助成分和工艺方法的整体控制，制备得到的软磁铁氧体具备高阻抗、高磁导率的特性。