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Electro-optical properties of tetragonal KNbO3

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Abstract

Linear electro-optical tensor coefficients and optical susceptibility of tetragonal KNbO3 are calculated using a formalism based on bond charge theory. Results are in close agreement with the experimental data. The covalent Nb-O bonding network comprising the distorted NbO6 octahedral groups in the structure is found to be a major contributor to the electro-optic coefficients making these groups more sensitive to these properties than the KO12 groups. The orientations of the chemical bonds play an important role in determining these properties.

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  1. Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India

    P. U. Sastry

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  1. P. U. Sastry
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Sastry, P.U. Electro-optical properties of tetragonal KNbO3 . Pramana - J Phys 68, 1001–1006 (2007). https://doi.org/10.1007/s12043-007-0099-0

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  • DOI: https://doi.org/10.1007/s12043-007-0099-0

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