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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…
cond-mat1999
Order-disorder model of phase transitions in the DMAGaS-DMAAlS family crystals
I. V. Stasyuk, O. V. Velychko
A four-state model is proposed for description of the sequence of phase transitions in ferroelectric crystals of DMAGaS and DMAAlS type. The ordering processes in the subsystems of…