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cond-mat.mtrl-sci2004
Theory of Rochelle salt: beyond the Mitsui model
I. V. Stasyuk, O. V. Velychko
A simple four-sublattice order-disorder model is developed for description of phase transitions and dielectric properties of the Rochelle salt crystal. The model is developed as a…
cond-mat.mtrl-sci2000
Thermodynamics and dielectric anomalies of DMAAS and DMAGaS crystals in the phase transitions region (Landau theory approach)
I. V. Stasyuk, O. V. Velychko, Z. Czapla +1
A simple description of thermodynamics of DMAAS and DMAGaS ferroelectric crystals by means of Landau expansion is proposed. Conditions of occurrence of phase transitions are establ…
cond-mat.mtrl-sci1999
Microscopic model of phase transition in the crystals of DMAAlS and DMAGaS type
I. V. Stasyuk, O. V. Velychko
The four-state model is proposed for description of phase transition in ferroelectric crystals of DMAGaS and DMAAlS type. Thermodynamical functions of the model are obtained in the…