Method of polarizing at least one large area sheet of ferroelect

Details Method of polarizing at least one large area sheet of ferroelect Method of polarizing at least one large area sheet of ferroelect

1996-02-20

1997-12-23

Gorgos, Kathryn L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204165, 29 2535, 427100, 427466, H04R 1700

Patent

active

057003599

ABSTRACT:
A method of polarizing at least one large area sheet of ferroelectric material (1). The method comprises the following successive steps: placing films of ferroelectric material (2, 3) of thickness e.sub.1 against two opposite faces (1a, 1b) of the sheet (1) of thickness e.sub.2, the thickness e.sub.1 being a function of the respective coercive fields of the materials constituting the sheet (1) and the films (2, 3); placing electrodes (4, 5) on either side of and against the films of ferroelectric material (2, 3); compressing the resulting complex; and applying a cyclical voltage between the two electrodes (4, 5).

REFERENCES:
patent: 4611260 (1986-09-01), Bauer

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