Electro-optical properties of tetragonal KNbO3

Pramana

P U Sastry1¹ 

[1] Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India$$

关键词: Electro-optic;    bond charge;    crystal structure;    ferroelectrics.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown