Electric field domain patterning
US6156255A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1998 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Jul 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3558
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of patterning domains within a body of a ferroelectric material includes the application of an electric field thereto via spaced conductors. Prior to applying the electric field to the material effects on the patterning of the existence of fringe electric field components which will be created in said body by said application of an electric field, surface treatments, and relative geometries of the body and the conductors are examined. The steps of this examination include: PA1 (a) characterizing the ferroelectric material by PA2 first measuring the breakdown field as a function of pulse width, PA2 determining the domain wall velocity as a function of electric field strength while simultaneously measuring the nucleation statistics, PA2 determining the hysteresis of the body relative to several candidate frequencies, and PA2 measuring the spontaneous polarization in the body, and the body's conductivity and permittivity; PA1 (b) characterizing various possible surface treatments by PA2 measuring the ferroelectric properties for the surface treatments, and PA2 identifying a desired surface treatment with the most extreme values of .eta.v.sup.2 (E), wherein .eta. is the nuclea…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.