A kind of easy-face anisotropic high-frequency microwave magnetic material and preparation method thereof

An anisotropic magnetic and magnetic material technology, applied in the field of easy-face anisotropic rare earth intermetallic compound high-frequency microwave magnetic materials and their preparation, to achieve excellent high-frequency microwave magnetic effects
CN105280320BActive Publication Date: 2017-09-29CENT IRON & STEEL RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT IRON & STEEL RES INST
Publication Date
2017-09-29

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Abstract

The invention belongs to the field of magnetic materials, in particular to an anisotropic high-frequency microwave magnetic material with easy surface and a preparation method thereof. The chemical formula of the magnetic material is expressed according to the atomic ratio: RxFe100‑x‑yBy (at%), wherein, 11.76<x≤15, 5.88≤y≤7.0, R is one of Sm, Er, Tm; the magnetic material It has easy-plane magnetic crystal anisotropy, and its easy-magnetization plane is perpendicular to the C-axis; the magnetic material is prepared by smelting→spinning→coarse crushing→hot pressing→hot deformation→crushing. The high-frequency microwave magnetic micropowder of the easy-plane anisotropic rare earth intermetallic compound obtained by the invention realizes the superposition of the magnetic crystal anisotropy field and the shape anisotropy field, so that the material has more excellent high-frequency characteristics.
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Description

technical field

[0001] The invention belongs to the field of magnetic materials, and in particular relates to a high-frequency microwave magnetic material of an anisotropic rare-earth intermetallic compound and a preparation method thereof. Background technique

[0002] In recent years, electromagnetic devices have been widely used in military and civilian equipment (radar, radio communication technology, local area network system, personal electronic notebook, etc.). At present, its application frequency has reached GHz. With the increasing application of high-frequency electromagnetic devices, electromagnetic interference as a new special environmental pollution has received more and more attention. Therefore, the research and development of GHz frequency band has high Electromagnetic wave absorbing materials with complex permeability have become a top priority.

[0003] The widely used microwave absorbing material is planar hexagonal structure ferrite. Due to the low ani...

Claims

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