Ferrite material, method for producing the same, and use thereof
By adjusting the elements and composition of the main and secondary components, combined with graded ball milling and precise control of calcination processes, high-purity spinel phase ferrite materials were prepared. This solved the problem of high eddy current loss in the high-frequency range of nickel-zinc soft magnetic ferrites, achieving high permeability and low loss, making it suitable for high-performance magnetic components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG FENGHUA ADVANCED TECHNOLOGY (HOLDING) CO LTD
- Filing Date
- 2026-03-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing nickel-zinc soft magnetic ferrites have large eddy current losses in the high-frequency range, making it difficult to meet the requirements of high permeability and low loss. Furthermore, the resonant frequency and cutoff frequency become unstable as the frequency increases, affecting the filtering and decoupling effects.
By adjusting the main component formulation to be zinc-rich and nickel-poor ZnNi(Cu) material, and mixing and co-firing it with the secondary component spinel phase preform, high-purity spinel phase ferrite material is prepared by controlling the AB site concentration and superexchange effect. The grain size and distribution are controlled by combining graded ball milling and precise control of calcination process.
It achieves high permeability, high impedance, and stable megahertz-level resonant and cutoff frequencies, making it suitable for high-performance magnetic components such as chip multilayer inductors, filters, decouplers, and resonators. It reduces eddy current losses and improves the reliability and consistency of the devices.
Smart Images
Figure CN122417596A_ABST