HexagonalRMnO3: a model system for two-dimensional triangular lattice antiferromagnets
| Autor: | Hasung Sim, Je-Geun Park, Joosung Oh, Jaehong Jeong, Manh Duc Le |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Magnetic structure Condensed matter physics Spins Point reflection Metals and Alloys 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Atomic and Molecular Physics and Optics Inelastic neutron scattering Electronic Optical and Magnetic Materials 0103 physical sciences Materials Chemistry Antiferromagnetism Hexagonal lattice Multiferroics 010306 general physics 0210 nano-technology |
| Zdroj: | Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 72:3-19 |
| ISSN: | 2052-5206 |
| DOI: | 10.1107/s2052520615022106 |
| Popis: | The hexagonalRMnO3(h-RMnO3) 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 theh-RMnO3a 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 ofh-RMnO3. |
| Databáze: | OpenAIRE |
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