Birefringence properties of mechanically clamped [K.sub.2]Zn[Cl.sub.4] crystals

The effect of uniaxial pressure applied along the principal crystallographic directions on the dispersion and temperature dependences of the birefringence Δ[n.sub.i] of [K.sub.2]Zn[Cl.sub.4] crystals has been studied. It has been established that the birefringence Δ[n.sub.i] is sensitive to uniaxial...

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Bibliographic Details
Published in:Physics of the solid state 2011-01, Vol.53 (1), p.131
Main Authors: Stadnyk, V.I, Gaba, V.M, Andrievskii, B.V, Kogut, Z.O
Format: Article
Language:English
Subjects:
Analysis
Zinc
Online Access:Get full text
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Summary:The effect of uniaxial pressure applied along the principal crystallographic directions on the dispersion and temperature dependences of the birefringence Δ[n.sub.i] of [K.sub.2]Zn[Cl.sub.4] crystals has been studied. It has been established that the birefringence Δ[n.sub.i] is sensitive to uniaxial pressures and that the uniaxial stresses do not change the character of the dispersion and temperature dependences of Δ[n.sub.i]. A new "pseudoisotropic" state of this crystal has been revealed. It has been found that the points of the paraphase-incommensurate phase-commensurate phase transitions can be significantly shifted under pressure toward different temperature ranges depending on the direction of the applied pressure due to the effect of uniaxial stresses on the structure of the [K.sub.2]Zn[Cl.sub.4] crystal.
ISSN:1063-7834
1090-6460
DOI:10.1134/S106378341101029X