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POLARIZATION AND OPTICAL SWITCHING OF QUADRISTABLE FERROELECTRIC FILMS BY SINGULAR ELECTRODES
POLARIZATION AND OPTICAL SWITCHING OF QUADRISTABLE FERROELECTRIC FILMS BY SINGULAR ELECTRODES
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机译：奇异铁电膜的极化及其光开关。
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摘要
A quadristable ferroelectric device comprises a ferroelectric material with at least two independently reversible polarization components and single-crystal domains. At least one set of electrodes are positioned to apply electric fields to single-crystal domains of the ferroelectric material at such angle to said reversible polarization components that a first electric field can ferroelectrically polarize and repolarize both said reversible polarization components and a second electric field can reverse one said reversible polarization component without reversing the other said reversible polarization component. Preferably, the ferroelectric material of the quadristable ferroelectric device is (010) crystallographically oriented bismuth titanate and the angle of the set of electrodes is between about 30 DEG and 60 DEG and most desirably between about 40 DEG and 50 DEG to the a and c crystallographic axes of the single-crystal domains. Further, it is preferable that each set of electrodes comprise three elongated electrodes parallel to and spaced apart from each other with the driving potential to apply the electric field applied at either the center or the pair of outer electrodes.
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