title: A Switchable Molecular Dielectric with Two Sequential Reversible Phase Transitions: [(CH3)4P]4[Mn(SCN)6].
abstract: A new organic-inorganic hybrid switchable and tunable dielectric compound, [(CH3)4P]4[Mn(SCN)6] (1), exhibits three distinct dielectric states above room temperature and undergoes two reversible solid-state phase transitions, including a structural phase transition at 330 K and a ferroelastic phase transition with the Aizu notation of mmmF2/m at 352 K. The variable-temperature structural analyses disclose that the origin of the phase transitions and dielectric anomalies can be ascribed to the reorientation or motion of both the [(CH3)4P](+) cations and [Mn(SCN)6](4-) anions in solid-state crystals.
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, People's Republic of China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, People's Republic of China.
authors.forename: Ping-Ping
authors.initials: PP
authors.lastname: Shi
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, People's Republic of China.
authors.forename: Qiong
authors.initials: Q
authors.lastname: Ye
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, People's Republic of China.
authors.forename: Hui-Ting
authors.initials: HT
authors.lastname: Wang
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, People's Republic of China.
authors.forename: De-Hong
authors.initials: DH
authors.lastname: Wu
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, People's Republic of China.
authors.forename: Heng-Yun
authors.initials: HY
authors.lastname: Ye
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, People's Republic of China.
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: Fu
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, People's Republic of China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang