Exceptional structural phase transition near room temperature in an organic–inorganic hybrid ferroelectric

Abstract

An organic-inorganic hybrid ferroelectric, (C6H5CH2CH2NH3)2[HgI4], undergoes an exceptional structural phase transition near room temperature, triggered by flip of half organic cations and order-disorder transition of inorganic anions, which may regard...

Metal ion-dependent structural phase transition and impact of the Jahn–Teller effect in two organic–inorganic hybrid compounds

“…9 In some cases, the distortion of the inorganic part (such as the distortion of a tetrahedron or octahedron) may also contribute to triggering the structural phase transitions, and bring about outstanding physical properties or even novel structural phase transition mechanisms. 10 For example, the switchable properties of magnetism induced by a switch of Jahn–Teller distortion in a Co II -based compound. 11 In this regard, further exploring the relationship between the crystal structure and phase transition mechanism is crucial.…”