Application and production of a magnetic product
AssigneeEpcos AG
InventorsMauricio Esguerra, Ralph Lucke
Life of this patent
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Abstract
The present invention relates to a magnetic device and method for making it, wherein the magnetic device is specifically constructed of grains in a matrix. The matrix may be cement or plaster. The grains have an average diameter that is greater than their magnetic domains. The device may be applied to shielding applications for frequencies ranging from 100 kHz to 10 GHz. The shielding may be applied to walls of a building, consumer products such as magnetic disks, and the like. The grains may be any ferromagnetic material, including ferrite.
Claims30
A magnetic device comprising a plurality of ferromagnetic material grains, said grains having a minimum diameter larger than an average domain diameter of said grains, and said grains further embedded in a matrix.
A method for producing a magnetic device, comprising the steps of:
- forming ferromagnetic grains, said grains having an average diameter greater than domains of said grains;
- and
- embedding said grains in a matrix, said matrix comprising a hardening material.
Dependencies are inferred from the claim text.