THE REFRACTOMETRY OF THE UNIAXIALLY STRESSED FERROELECTRICS
Copyright policy )THE REFRACTOMETRY OF THE UNIAXIALLY STRESSED FERROELECTRICS
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The effect of uniaxial mechanical stresses upon the spectral and temperature dependences of birefringences in some ferroelectric crystals with the incommensurate phase are studied. Considerable baric displacements of para-incommensurate-commensurate phases transition points were observed.The calculated temperature and spectral dependences of combined ?????im and absolute ??im piezooptic constants show a considerable dispersion and anomalies at phase transitions.The increase of the principal refractive indices under stress effect was observed.
- Lviv University Ukraine
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