Ivan Franko National University of Lviv, Ukraine
D.Sc., Professor of the Department for Experimental Physics
mykola.romanyuk@lnu.edu.ua
optical phase transitions in ferroelectrics – binary structure and dynamics of domains; e-polarization; spontaneous and induced optical parametric effects of nominally pure, mixed and irradiated crystals; birefringence sign inversion; spectral refractometry in the spectrum electronic area and in crystal-optic thermometry