Ferroelastic domains and phase transitions in organic–inorganic hybrid perovskite CH3NH3PbBr3
Journal of Materials Chemistry C(2021)
Abstract
Polarized light microscopy reveals twin domains and symmetry of the phases in CH3NH3PbBr3 crystal; domain structure remains unresponsive to electric field but changes under external stress, confirming ferroelasticity while ruling out ferroelectricity.
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