Delicate balance between ferroelectricity and antiferroelectricity in hexagonal InMnO3

F. T. Huang; X. Wang; Y. S. Oh; K. Kurushima; S. Mori; Y. Horibe; S. W. Cheong

doi:10.1103/PhysRevB.87.184109

Delicate balance between ferroelectricity and antiferroelectricity in hexagonal InMnO₃

F. T. Huang^*, X. Wang, Y. S. Oh, K. Kurushima, S. Mori, Y. Horibe, S. W. Cheong

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

The presence of ferroelectricity in hexagonal InMnO₃ has been highly under debate. The results of our comprehensive experiments of low-temperature (T) polarization, transmission electron microscopy, and high-angle annular dark-field scanning TEM on well-controlled InMnO₃ reveal that the ground state is ferroelectric with P6₃cm symmetry, but a nonferroelectric P3̄c1 state exists at high T and can be quenched to room temperature. We found that the competing ferroelectric and antiferroelectric phases coexist in mesoscopic scales and can be deliberately controlled by varying thermal treatments.

Original language	English
Article number	184109
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	87
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.87.184109
Publication status	Published - 13 May 2013
Externally published	Yes

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Huang, F. T., Wang, X., Oh, Y. S., Kurushima, K., Mori, S., Horibe, Y., & Cheong, S. W. (2013). Delicate balance between ferroelectricity and antiferroelectricity in hexagonal InMnO₃. Physical Review B - Condensed Matter and Materials Physics, 87(18), Article 184109. https://doi.org/10.1103/PhysRevB.87.184109

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AU - Mori, S.

AU - Horibe, Y.

AU - Cheong, S. W.

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AB - The presence of ferroelectricity in hexagonal InMnO3 has been highly under debate. The results of our comprehensive experiments of low-temperature (T) polarization, transmission electron microscopy, and high-angle annular dark-field scanning TEM on well-controlled InMnO3 reveal that the ground state is ferroelectric with P63cm symmetry, but a nonferroelectric P3̄c1 state exists at high T and can be quenched to room temperature. We found that the competing ferroelectric and antiferroelectric phases coexist in mesoscopic scales and can be deliberately controlled by varying thermal treatments.

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Delicate balance between ferroelectricity and antiferroelectricity in hexagonal InMnO₃

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