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Author Bekheet, Maged F. ♦ Werkstoffe, Fachgebiet Keramische ♦ Svoboda, Ingrid ♦ Liu, Na ♦ Bayarjargal, Lkhamsuren ♦ Irran, Elisabeth ♦ Dietz, Christian ♦ Stark, Robert W. ♦ Riedel, Ralf ♦ Gurlo, Aleksander
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ CRYSTAL GROWTH ♦ FERROELECTRIC MATERIALS ♦ HARMONIC GENERATION ♦ HCP LATTICES ♦ LEAD FLUORIDES ♦ MICROSCOPY ♦ MONOCRYSTALS ♦ PHASE TRANSFORMATIONS ♦ POLARIZATION ♦ X RADIATION ♦ X-RAY DIFFRACTION
Abstract To understand the origin of the ferroelectricity in InMnO{sub 3}, single crystals with average size of 1 mm were grown in PbF{sub 2} flux at 950 °C. The results of single crystal X-ray diffraction, second harmonic generation and piezoresponse force microscopy studies of high-quality InMnO{sub 3} single crystals reveal that the room-temperature state in this material is ferroelectric with P6{sub 3}cm symmetry. The polar InMnO{sub 3} specimen undergoes a reversible phase transition from non-centrosymmetric P6{sub 3}cm structure to a centrosymmetric P6{sub 3}/mmc structure at 700 °C as confirmed by the in situ high-temperature Raman spectroscopic and synchrotron X-ray diffraction experiments. - Graphical abstract: Piezoresponse fore microscopy (PFM) studies of high quality InMnO{sub 3} 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 ±P{sub z}. Display Omitted - Highlights: • InMnO{sub 3} single crystals with average size of 1 mm were grown in PbF{sub 2} flux at 950 °C. • The room-temperature state of InMnO{sub 3} is ferroelectric with polar P6{sub 3}cm structure. • PolarInMnO{sub 3} reversibly transforms to a centrosymmetric P6{sub 3}/mmc structure above 700 °C.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-09-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 241


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