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
CN105280320AActive Publication Date: 2016-01-27CENT IRON & STEEL RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT IRON & STEEL RES INST
Publication Date
2016-01-27

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Abstract

The invention belongs to the field of magnetic materials, and particularly to an anisotropic high-frequency microwave magnetic material and a preparation method thereof. The chemical formula of the magnetic material is RxFe100-x-yBy (at%), wherein 11.76<x<=15, 5.88<=y<=7.0, and R is selected from Sm, Er and Tm. The magnetic material has magnetic crystal anisotropy, wherein an easily magnetized surface is vertical with a C axis. The magnetic material is prepared through processes of melting, preparing to a belt, rough crushing, hot pressing, heat deforming and crushing. The anisotropic high-frequency microwave magnetic material which is made of one compound of a metal selected from rare earth intermetallics according to the invention realizes superposing of a magnetic crystal anisotropic field and a shape anisotropic field, so that the material has better high-frequency characteristic.
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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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