Bekheet, Maged F. ; Svoboda, Ingrid ; Liu, Na ; Bayarjargal, Lkhamsuren ; Irran, Elisabeth ; Dietz, Christian ; Stark, Robert W. ; Riedel, Ralf ; Gurlo, Aleksander (2016)
Ferroelectric InMnO3: Growth of single crystals, structure and high-temperature phase transitions.
In: Journal of Solid State Chemistry, 241
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Bekheet, Maged F. ; Svoboda, Ingrid ; Liu, Na ; Bayarjargal, Lkhamsuren ; Irran, Elisabeth ; Dietz, Christian ; Stark, Robert W. ; Riedel, Ralf ; Gurlo, Aleksander |
| Art des Eintrags: | Bibliographie |
| Titel: | Ferroelectric InMnO3: Growth of single crystals, structure and high-temperature phase transitions |
| Sprache: | Englisch |
| Publikationsjahr: | September 2016 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Solid State Chemistry |
| Jahrgang/Volume einer Zeitschrift: | 241 |
| URL / URN: | http://dx.doi.org/10.1016/j.jssc.2016.05.031 |
| Kurzbeschreibung (Abstract): | 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. |
| Freie Schlagworte: | Single crystals, Ferroelectrics, Multiferroics, Phase transitions, Hexagonal rare-earth manganites, in situ X-ray diffraction |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physics of Surfaces 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung Profilbereiche Profilbereiche > Thermo-Fluids & Interfaces 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 30 Sep 2016 07:59 |
| Letzte Änderung: | 17 Mär 2017 10:25 |
| PPN: | |
| Sponsoren: | The financial support by the German Research Foundation DFG (Grant number GU 992/8-1) within the priority program SPP 1236 and DESY (Proposal I-20110174) is greatly acknowledged. |
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