RELATIONSHIP BETWEEN LINEAR AND QUADRATIC ELECTRO-OPTIC COEFFICIENTS IN LiNbO3, LiTaO3, AND OTHER OXYGEN-OCTAHEDRA FERROELECTRICS BASED ON DIRECT MEASUREMENT OF SPONTANEOUS POLARIZATION

RELATIONSHIP BETWEEN LINEAR AND QUADRATIC ELECTRO-OPTIC COEFFICIENTS IN LiNbO3, LiTaO3, AND OTHER OXYGEN-OCTAHEDRA FERROELECTRICS BASED ON DIRECT MEASUREMENT OF SPONTANEOUS POLARIZATION

The spontaneous polarizations in LiNbO3, LiTaO3, and Ba2NaNb5O15 have been measured directly at room temperature by a field reversal method and found to be Ps (LiNbO3) = 0.71 C/m2, Ps (LiTaO3) = 0.50 C/m2, and Ps (Ba2NaNb5O15) = 0.40 C/m2. Using these values we show that the linear electro-optic eff...

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Veröffentlicht in:Applied physics letters 1968-03, Vol.12 (6), p.209-211
Hauptverfasser: Wemple, S. H., DiDomenico, M., Camlibel, I.
Format: Artikel
Sprache:eng
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Zusammenfassung:The spontaneous polarizations in LiNbO3, LiTaO3, and Ba2NaNb5O15 have been measured directly at room temperature by a field reversal method and found to be Ps (LiNbO3) = 0.71 C/m2, Ps (LiTaO3) = 0.50 C/m2, and Ps (Ba2NaNb5O15) = 0.40 C/m2. Using these values we show that the linear electro-optic effect in these materials is related fundamentally to a biased quadratic effect associated with each BO6 octahedron. Based on this result, predictions are made of the spontaneous polarization in other oxygen-octahedra ferroelectrics.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1651955