EPR experimental results obtained for SASeD doped with Cr³⁺ are reported with special emphasis on those observations which reveal the effect of soft modes i.e. the temperature dependence of the DZZ spin- Hamiltonian ...

The anomalous temperature behavior of the Raman scattering bands at superionic phase transition of Cu₆PS₅Br is revealed. Using density functional perturbation theory within local density approximation, ab initio long-wavelength ...

We have modified Landau-Khalatnikov approach and shown that the pyroelectric response of inhomogeneous ferroelectric-semiconductor films can be described by using six coupled equations for the average displacement, its ...

Professor Ivan Vakarchuk is a well-known Ukrainian physicist internationally recognized among theoreticians owing to his works on quantum liquids, phase transitions and critical phenomena, disordered systems and quantum ...

The dependencies of the birefringence ∆ni of K₂SO₄ crystals in wide spectral (250–800 nm) ranges, as well as the effect of uniaxial mechanical stress on them have been studied. The values of ni for K₂SO₄ are found to be ...

This issue contains Proceedings of the VIII Ukrainian-Polish and III~East-European Meeting on Ferroelectrics Physics (Ukr-Pol 8) held in Lviv on September 4--7, 2006. The Meeting was the continuation of the common ...