title: 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.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China.
authors.forename: Guan-Cheng
authors.initials: GC
authors.lastname: Xu
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Ma
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Zhe-Ming
authors.initials: ZM
authors.lastname: Wang
authors.forename: Song
authors.initials: S
authors.lastname: Gao