Refractive indices of [K.sub.2][Zn[Cl.sub.4] crystals in an incommensurate phase under uniaxial stresses

The influence of uniaxial mechanical stresses directed along the principal crystallophysical axes on refractive- index temperature dependences in [K.sub.2]Zn[Cl.sub.4] crystals was studied. It is established that the refractive indices ni are quite sensitive to uniaxial stresses. Significant baric s...

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Bibliographic Details
Published in:Journal of applied spectroscopy 2010-11, Vol.77 (5), p.648
Main Authors: Gaba, V.M, Stadnyk, V.I, Kogut, Z.O, Brezvin, R.S
Format: Article
Language:English
Subjects:
Crystals
Equipment and supplies
Fiber optics
Structure
Zinc
Online Access:Get full text
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Summary:The influence of uniaxial mechanical stresses directed along the principal crystallophysical axes on refractive- index temperature dependences in [K.sub.2]Zn[Cl.sub.4] crystals was studied. It is established that the refractive indices ni are quite sensitive to uniaxial stresses. Significant baric shifts of the paraphase-incommensurate-commensurate phase transition points to different temperature regions were observed, which is due to the effect of the uniaxial stress on the [K.sub.2]Zn[Cl.sub.4] crystal structure. It is found that applying uniaxial pressure increases the value of the temperature hysteresis of the commensurate-incommensurate phase transition.
ISSN:0021-9037
1573-8647