Serrao, Claudy Rayan and Krupanidhi, SB and Bhattacharjee, Joydeep and Waghmarea, Umesh V and Kundu, Asish K and Rao, CNR (2006) InMnO3: A biferroic. In: Journal of Applied Physics, 100 (7).
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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 (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 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:||Journal Article|
|Additional Information:||Copyright of this article belongs to American Institute of Physics.|
|Department/Centre:||Division of Chemical Sciences > Materials Research Centre|
|Date Deposited:||03 Aug 2010 10:11|
|Last Modified:||19 Sep 2010 06:12|
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