Fig. 1: Comparison between traditional high-temperature ferroelectrics and S-/R-F.
From: Organic radical ferroelectric crystals with martensitic phase transition
a Traditional high-temperature ferroelectrics show only one ferroelectric phase at room temperature. b The combination of martensitic phase transition and ferroelectricity in S-/R-F brings forth bistability with two different ferroelectric phases at room temperature. LTP and HTP represent low-temperature phase and high-temperature phase, respectively. RT FE, RT FE1, and RT FE2 represent different ferroelectric phases at room temperature.
