An unprecedented hexagonal double perovskite organic–inorganic hybrid ferroelastic material: (piperidinium)<sub>2</sub>[KBiCl<sub>6</sub>]
Qian-Ru Meng, Wei‐Jian Xu, Wang‐Hua Hu, Hui Ye, Xiao‐Xian Chen, Wei Yuan, Wei‐Xiong Zhang, Xiao‐Ming Chen
Abstract
An unprecedented A2MIMIIIX6-type double perovskite adopting a fully hexagonal BaNiO3-type structure, (piperidinium)2[KBiCl6], undergoes a 2/mF1[combining macron] ferroelastic phase transition at 285 K with a spontaneous strain of 0.0615, arising from the order-disorder transition of organic cations together with the synchronous displacement of inorganic chains.
Topics & Concepts
HalidePerovskite (structure)Materials scienceHexagonal crystal systemHybrid materialCrystallographyStrain (injury)Chemical engineeringNanotechnologyInorganic chemistryChemistryEngineeringMedicineInternal medicinePerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyFerroelectric and Piezoelectric Materials