Polarization inversion method for ferroelectric substances

Details Polarization inversion method for ferroelectric substances Polarization inversion method for ferroelectric substances

2006-09-26

2006-09-26

Mayekar, Kishor (Department: 1753)

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C204S157150, C205S766000, C427S100000, C029S025350, C359S326000, C361S225000

Reexamination Certificate

active

07112263

ABSTRACT:
A pattern electrode having a predetermined pattern and a connecting electrode connected to the pattern electrode are formed on one surface of a single-polarized ferroelectric substance crystal. An electric field is applied across the ferroelectric substance crystal with corona charging or electron beam irradiation from the side of the other surface of the ferroelectric substance crystal. A polarization inversion region having a shape corresponding to the predetermined pattern is thus formed in the ferroelectric substance crystal. The electric field is applied in a state, in which an electrical insulating material is located on the other surface of the ferroelectric substance crystal and at a position corresponding to at least a position of a certain area of the connecting electrode.

REFERENCES:
patent: 5193023 (1993-03-01), Yamada et al.
patent: 5249250 (1993-09-01), Yamada et al.
patent: 5594746 (1997-01-01), Harada

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