| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1331286 | Journal of Solid State Chemistry | 2016 | 10 Pages |
•InMnO3 single crystals with average size of 1 mm were grown in PbF2 flux at 950 °C.•The room-temperature state of InMnO3 is ferroelectric with polar P63cm structure.• PolarInMnO3 reversibly transforms to a centrosymmetric P63/mmc structure above 700 °C.
To understand the origin of the ferroelectricity in InMnO3, single crystals with average size of 1 mm were grown in PbF2 flux at 950 °C. The results of single crystal X-ray diffraction, second harmonic generation and piezoresponse force microscopy studies of high-quality InMnO3 single crystals reveal that the room-temperature state in this material is ferroelectric with P63cm symmetry. The polar InMnO3 specimen undergoes a reversible phase transition from non-centrosymmetric P63cm structure to a centrosymmetric P63/mmc structure at 700 °C as confirmed by the in situ high-temperature Raman spectroscopic and synchrotron X-ray diffraction experiments.
Graphical abstractPiezoresponse fore microscopy (PFM) studies of high quality InMnO3 single crystal revealed that the room-temperature state of this material is ferroelectric with a clear cloverleaf pattern corresponding to six antiphase ferroelectric domains with alternating polarization ±Pz.Figure optionsDownload full-size imageDownload as PowerPoint slide
