The electrooptic effect in BaTiO3 is discussed based upon the non-linear electronic polarizabilities for the respective ions calculated by the variational method in quantum mechanics. The Pockels constants r33 are obtained as 41.4 × 10-8 in the clamped state and 265.6 × 10-8 in the free state respectively. The correlation between the Kerr effect and the piezoelectric effect is also discussed.
Quantum theory of electrooptic effect in BaTiO3
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