Magnetoelastic coupling and symmetry breaking in the frustrated antiferromagnet α-NaMnO2

Giot, M., Chapon, L.C., Androulakis, J., Green, M.A., Radaelli, P.G., Lappas, A. (2007) Magnetoelastic coupling and symmetry breaking in the frustrated antiferromagnet α-NaMnO2. Physical Review Letters, 99 (24). p. 247211. ISSN 0031-9007. (doi:10.1103/PhysRevLett.99.247211) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1103/PhysRevLett.99.247211

Abstract

The magnetic and crystal structures of the α-NaMnO2 have been determined by high-resolution neutron powder diffraction. The system maps out a frustrated triangular spin lattice with anisotropic interactions that displays two-dimensional spin correlations below 200 K. Magnetic frustration is lifted through magneto-elastic coupling, evidenced by strong anisotropic broadening of the diffraction profiles at high temperature and ultimately by a structural phase transition at 45 K. In this low-temperature regime a three-dimensional antiferromagnetic state is observed with a propagation vector k=(12,12,0). © 2007 The American Physical Society.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevLett.99.247211
Additional information: Unmapped bibliographic data: C7 - 247211 [EPrints field already has value set] LA - English [Field not mapped to EPrints] J2 - Phys Rev Lett [Field not mapped to EPrints] AD - Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, Vassilika Vouton, 71110 Heraklion, Greece [Field not mapped to EPrints] AD - ISIS, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Chilton-Didcot, OX11 0QX, Oxfordshire, United Kingdom [Field not mapped to EPrints] AD - NIST Center for Neutron Research, 100 Bureau Drive, Gaithersburg, MD 20899-8562, United States [Field not mapped to EPrints] AD - Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115, United States [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Crystal symmetry, High temperature effects, Magnetoelectric effects, Neutron powder diffraction, Phase transitions, Spin dynamics, High-resolution neutron powder diffraction, Magnetoelastic coupling, Spin lattice, Symmetry breaking, Antiferromagnetic materials
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 15 Oct 2015 11:07 UTC
Last Modified: 29 May 2019 16:09 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51018 (The current URI for this page, for reference purposes)
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