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Title: InMnO3: A biferroic
Authors: Serrao, Claudy Rayan
Krupanidhi, S B
Bhattacharjee, Joydeep
Waghmare, Umesh V
Kundu, Asish K
Rao, C N R
Keywords: Magnetic Ferroelectrics
Issue Date: 1-Oct-2006
Publisher: American Institute of Physics
Citation: Journal of Applied Physics 100(7) , 076104-1-2 (2006)
Abstract: 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. (c) 2006 American Institute of Physics.
Other Identifiers: 0021-8979
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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