Ferroelectric-ferromagnetic composite materials

Details Ferroelectric-ferromagnetic composite materials Ferroelectric-ferromagnetic composite materials

1994-06-27

1996-04-30

Bonner, C. Melissa

Compositions

Piezoelectric

252 626, 501137, 501139, C04B 3526, C04B 35468

Patent

active

055121969

ABSTRACT:
A material which possesses both capacitive and inductive properties for suppressing electromagnetic interference is provided, wherein the material is a composite of a ferroelectric material and a ferromagnetic material. The ferroelectric-ferromagnetic composite material is formulated and processed so as to retain the distinct electrical properties of the individual constituents according to the relative quantities of the constituents present in the ferroelectric-ferromagnetic composite material. As a unitary composite element, the ferroelectric-ferromagnetic composite is readily formable to provide a compact electrical filter whose filtering capability is highly suitable for suppressing electromagnetic interference from sources internal and external to an automotive environment. The sintered composite has a very low porosity; interconnectivity between the ferroelectric and ferromagnetic phases; and has no chemical reaction between the ferroelectric and ferromagnetic phases to produce a third phase.

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