Andriyevsky B., Kardash V., Romanyuk M.O.
The method of calculation of refractive indices for complicated crystals in the frame of "oriented gas" model are proposed and made on the basis of known magnitudes of anisotropic polarizability of chemical bonds between atoms. Principal refractive indices and optical indicatrix orientations of DGN crystal in para- and ferroelectric phases calculated in the frame of "oriented gas" model and expe-rimentally observed have been found to be close to one another.
Keywords: crystals, refractive indices
doi 10.3116/16091833/2/3/150/2001
1. Batsanov SS, 1976. Structural refractometry. "Vysshaya shkola" 304.
2. Pepinsky R, Vedam K, Hoshino S, and Okaya Y, 1958. Phys. Rev. 111:
430-432.
doi:10.1103/PhysRev.111.430
http://dx.doi.org/10.1103/PhysRev.111.430
3. Hoshino S, Sato S, and Toyoda K, 1963. Jap. J. Appl. Phys. 2: 519-528.
doi:10.1143/JJAP.2.519
http://dx.doi.org/10.1143/JJAP.2.519
4. Hoshino S, Okaya Y, and Pepinsky R, 1959. Phys. Rev. 115: 323-330.
doi:10.1103/PhysRev.115.323
http://dx.doi.org/10.1103/PhysRev.115.323
5. Sato SJ, 1968. Phys. Soc. Jap. 25: 185-201.
doi:10.1143/JPSJ.25.185
http://dx.doi.org/10.1143/JPSJ.25.185
6. Le Fevre R, 1970. Rev. Pure Appl. Chem. 20: 67-72.
7. Varikash VM, Romanyuk NA, and Mytsyk BG, 1982. J.Appl.Spectr. 37:
319–323.