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Behaviour of the optical indicatrix and small‐angle light scattering in the case of “Devil's Staircase”
Author(s) -
Sveleba S.,
Kapustianik V.,
Polovinko I.,
Bublyk M.,
Zhmurko V.
Publication year - 1994
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221830125
Subject(s) - phason , light scattering , scattering , rotation (mathematics) , condensed matter physics , optics , deformation (meteorology) , optical rotation , lattice (music) , physics , materials science , crystallography , chemistry , geometry , mathematics , composite material , phonon , acoustics
The deformation and rotation of the optical indicatrix and the scattering of light in the incommensurate phases which consist of a sequence of phases with superstructures are investigated. The periods of such superstructures are large but commensurate with the period of the crystalline lattice. The values of deformation and rotation of the optical indicatrix are determined on the basis of the analysis of light passed through [N(CH 3 ) 4 ] 2 FeCl 4 and [N(CH 3 ) 4 ] 2 CuCl 4 crystals. The pulsing deformation of the optical indicatrix and its rotation in the commensurate regions are found in the incommensurate phase. It is shown that the investigated scattering of light is connected with the scattering on the phason.