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| Hauptseite > Publikationsdatenbank > Honeycomb-lattice antiferromagnet Mn 2 V 2 O 7 : a temperature-dependent x-ray diffraction, neutron diffraction and ESR study |
| Hauptseite > Publikationsdatenbank > Honeycomb-lattice antiferromagnet Mn 2 V 2 O 7 : a temperature-dependent x-ray diffraction, neutron diffraction and ESR study |
| Journal Article | FZJ-2018-01470 |
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2017
IOP Publ.
Bristol
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Please use a persistent id in citations: doi:10.1088/2053-1591/aa67d6
Abstract: Temperature-dependent x-ray diffraction (XRD), neutron powder diffraction and high-field electron spin resonance (ESR) have been employed to study the structural and magnetic properties of distorted honeycomb lattice Mn2V2O7. The XRD data reveal that upon cooling Mn2V2O7 undergoes a martensitic-like β–α structural phase transition at ~270 K. Upon heating, however, the reversible α–β structural transition takes place at ~210 K, showing the first-order feature of the transition. The temperature range, where the two phases coexist, is well determined. With further decrease in temperature, a paramagnetic-to-antiferromagnetic (AFM) phase transition takes place at T N = ~23 K as indicated by ESR and neutron powder diffraction data. The ESR data demonstrate the AFM resonance modes below T N, which can be well understood by conventional AFM resonance theory with uniaxial anisotropy.
Keyword(s): Magnetic Materials (1st) ; Condensed Matter Physics (2nd) ; Magnetism (2nd)
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