Description of CuInP${}_2$S${}_6$ ferrielectrics in a mixed Ising model

R. Yevych, V. Liubachko, V. Hryts +3

The appearance of spontaneous polarization in CuInP${}_2$S${}_6$ ferrielectrics is related to the second order Jahn-Teller effect for copper cations located in a double-well local…