InMnO3: a biferroic

Serrao, Claudy Rayan ; Krupanidhi, S. B. ; Bhattacharjee, Joydeep ; Waghmare, Umesh V. ; Kundu, Asish K. ; Rao, C. N. R. (2006) InMnO3: a biferroic Journal of Applied Physics, 100 (7). 076104_1-076104_3. ISSN 0021-8979

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InMnO3 which has a hexagonal structure similar to that of YMnO3 is found to show a canted antiferromagnetic behavior below 50 K (TN) 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 InMnO3 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 InMnO3 to uniaxial strain.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
ID Code:19072
Deposited On:25 Nov 2010 14:25
Last Modified:06 Jun 2011 04:20

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