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Current issue   Ukr. J. Phys. 2015, Vol. 60, N3, p.273-276
doi:10.15407/ujpe60.03.0273    Paper

Demyanyshyn N.M.

H.V. Karpenko Physico-Mechanical Institute, Nat. Acad. of Sci. of Ukraine
(5, Naukova Str., Lviv 79601, Ukraine; e-mail: nmdem@ipm.lviv.ua)

Relaxation of Static Photoelasticity in Lead Germanate Crystals

Section: Solid matter
Original Author's Text: Ukrainian

Abstract: The relaxation of static photoelasticity in lead germanate (Pb5Ge3O11) crystals has been studied. The anisotropy of relaxation amplitudes and their anomalies near the phase transition point were revealed. The photoelastic relaxations and peculiarities in their temperature behavior are explained as manifestations of the piezocaloric mechanism.

Key words: photoelasticity, photoelasticity relaxation, ferroelectrics.