Disorder−Order Ferroelectric Transition in the Metal Formate Framework of [NH₄][Zn(HCOO)₃]

Abstract

A three-dimensional chiral metal formate framework compound, [NH(4)][Zn(HCOO)(3)], undergoes a paraelectric-ferroelectric phase transition at 191 K triggered by the disorder-order transition of NH(4)(+) cations within the structure.