Abstract: From the chemical bond viewpoint, dielectric properties of some practical materials with various crystal structures were quantitatively studied. The correlation between constituent chemical bonds and dielectric properties of these crystals was analyzed using the proposed chemical bond method. Furthermore, on the basis of the chemical bond method a combination method was presented for the quantitative determination of dielectric properties of materials with a similar crystal structure. From the current work, we may derive structural information concerning the nonlinearity origin of optical crystals, which is helpful for the nonlinear optical crystal engineering.

Key words: From the chemical bond viewpoint, dielectric properties of some practical materials with various crystal structures were quantitatively studied. The correlation between constituent chemical bonds and dielectric properties of these crystals was analyzed using the proposed chemical bond method. Furthermore, on the basis of the chemical bond method a combination method was presented for the quantitative determination of dielectric properties of materials with a similar crystal structure. From the current work, we may derive structural information concerning the nonlinearity origin of optical crystals, which is helpful for the nonlinear optical crystal engineering.