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$InMnO_3$: A biferroic

Serrao, Claudy Rayan and Krupanidhi, SB and Bhattacharjee, Joydeep and Waghmare, Umesh V and Kundu, Asish K and Rao, CNR (2006) $InMnO_3$: A biferroic. In: Journal of Applied Physics, 100 (7). 076104-1-3.

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$InMnO_3$ which has a hexagonal structure similar to that of $YMnO_3$ is found to show a canted antiferromagnetic behavior below 50 K $(T_N)$ and a ferroelectric FE transition at 500 K accompanied by hystersis. We have determined the structure, polarization, and energetics of the FE and paraelectric PE phases of $InMnO_3$ using first-principles density functional theory calculations based on pseudopotentials and a plane-wave basis, and find the polarization of the PE phase to be a half-integer quantum. The difference in polarization of the FE and PE phases calculated along a simple path is different from the absolute value of polarization of the FE phase. A weak piezoelectric response is exhibited by $InMnO_3$ to uniaxial strain.

Item Type: Journal Article
Publication: Journal of Applied Physics
Publisher: American Institute of Physics
Additional Information: Copyright of this article belongs to American Institute of Physics.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 08 Dec 2006
Last Modified: 19 Sep 2010 04:32
URI: http://eprints.iisc.ac.in/id/eprint/8929

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