Premium
Temperature dependence of optical activity and circular dichroism in α‐ZnP 2 crystals
Author(s) -
Kushnir O. S.,
Bevz O. A.,
Polovinko I. I.,
Sveleba S. A.
Publication year - 2003
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.200301756
Subject(s) - gyration , birefringence , materials science , tetragonal crystal system , perpendicular , circular dichroism , hysteresis , optics , condensed matter physics , crystallography , molecular physics , crystal structure , chemistry , physics , geometry , mathematics
The circular birefringence related to the gyration components along and perpendicular to the optical axis and the circular dichroism of tetragonal α‐ZnP 2 single crystals are determined in the temperature range 290–450 K, using universal null‐polarimetric techniques. The oscillatory temperature behaviour of the optical rotatory power and the ellipticity of light passed through the crystal in the (001) direction is quantitatively well explained by the influence of multiple reflections of light. The observed thermal hysteresis and dependence of the gyration on sample prehistory testify indirectly the availability of incommensurately modulated structure in α‐ZnP 2 .