In:
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr), Vol. 72, No. 1 ( 2016-02-01), p. 3-19
Abstract:
The hexagonal R MnO 3 ( h - R MnO 3 ) are multiferroic materials, which exhibit the coexistence of a magnetic order and ferroelectricity. Their distinction is in their geometry that both results in an unusual mechanism to break inversion symmetry and also produces a two-dimensional triangular lattice of Mn spins, which is subject to geometrical magnetic frustration due to the antiferromagnetic interactions between nearest-neighbor Mn ions. This unique combination makes the h - R MnO 3 a model system to test ideas of spin-lattice coupling, particularly when both the improper ferroelectricity and the Mn trimerization that appears to determine the symmetry of the magnetic structure arise from the same structure distortion. In this review we demonstrate how the use of both neutron and X-ray diffraction and inelastic neutron scattering techniques have been essential to paint this comprehensive and coherent picture of h - R MnO 3 .
Type of Medium:
Online Resource
ISSN:
2052-5206
DOI:
10.1107/S2052520615022106
Language:
Unknown
Publisher:
International Union of Crystallography (IUCr)
Publication Date:
2016
detail.hit.zdb_id:
2020841-8
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