Ferrite material, preparation method thereof, raw material for preparing ferrite material and electronic device

By adjusting the formula of manganese-zeb ferrite material and doping with Co, Ca, and Bi elements, the problem of low Curie temperature of existing high-frequency and high impedance manganese-zeb ferrite material is solved, and the high magnetic permeability and high Curie temperature of the material are achieved, which improves the competitive advantage in harsh environments.

CN119724801APending Publication Date: 2025-03-28SHENZHEN SUNLORD ELECTRONICS
0 Cites 0 Cited by

Patent Information

Application Number
CN202411860341.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The Curie temperature of existing high-frequency, high-impedance manganese and zinc ferrite materials is relatively low, making it difficult to take into account the requirements of magnetic permeability μi=3000 and Curie temperature above 160℃.

Method used

The material was prepared by adjusting the formulation of the ferrite material, including 65.5 wt% to 68.5 wt% Fe2O3, 11 wt% to 14 wt% ZnO, 18 wt% to 20.5 wt% MnO, 0.5 wt% to 1.5 wt% CoO, 0.01 wt% to 0.035 wt% CaO, 0.008 wt% to 0.038 wt% Bi2O3, by adjusting the formulation of the ferrite material, doping Co, Ca, Bi elements to increase magnetic permeability and Curie temperature.

Benefits of technology

The magnetic permeability μi of the material meets the requirements of 3000 (1±20%) and Curie temperature above 160℃, solves the problem of low Curie temperature in existing materials, and improves the competitive advantage in harsh environments.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a ferrite material, a preparation method thereof, a raw material for preparing the ferrite material, and an electronic device, the ferrite material comprises the following components in percentage by weight: 65.5 wt% to 68.5 wt% of Fe2O3, 11 wt% to 14 wt% of ZnO, 18 wt% to 20.5 wt% of MnO, 0.5 wt% to 1.5 wt% of CoO, 0.01 wt% to 0.035 wt% of CaO, and 0.008 wt% to 0.038 wt% of Bi2O3. The ferrite material can solve the problem of low Curie temperature of the high-frequency high-impedance manganese zinc ferrite material with mu i = 3000 (1 + / -20%) at present, and the competitive advantages of the manganese zinc ferrite material in severe use environments such as automotive electronics and the like are improved.
Need to check novelty before this filing date? Find Prior Art