Ferroelectric Capacitor Modelling in LTSpice

Ferroelectrics are materials having switchable spontaneous polarization property. By applying alternating electric field, polarization is switched from one state to another which gives rise to the signature property called hysteresis loop. The ferroelectric material sandwiched between the capacitor plates can impart memory to capacitors, which can be used as single bit non-volatile memory. Ferroelectric capacitor is modelled using Schmitt trigger circuit and RC filters connected in series The circuit model is simulated by changing different physical parameters and the hysteresis property of ferroelectric capacitor is analyzed using Sawyer Tower circuit in LTSpice.