| abstract |
The invention provides a high dielectric constant microwave ferrite material and a preparation method thereof. The chemical formula of the microwave ferrite material is Bi 1.1 Ca 0.9+2x Y 1‑2x Zr 0.45 (V 0.9 Ni 0.1 ) x Mn y Fe 4.55‑x‑ y O 12 , x＝0.2～0.4, y＝0.05～0.1 . The preparation method comprises the stoichiometric formula of Bi 1.1 Ca 0.9+2x Y 1-2x Zr 0.45 (V 0.9 Ni 0.1 ) x Mn y Fe 4.55-x-y O 12 , x=0.2-0.4, y=0.05-0.1 Prepare raw materials, and use the raw materials to make the microwave ferrite material. The dielectric constant of the high dielectric constant microwave ferrite material of the present invention is 23-25, 4πMs is 1150Gs-1250Gs, △H<50Oe, Tc >180°C, which can well meet the application of microwave ferrite devices. |