Sannigrahi, J;
Adroja, DT;
Perry, R;
Gutmann, MJ;
Petricek, V;
Khalyavin, D;
(2019)
Commensurate to incommensurate magnetic phase transition in honeycomb-lattice pyrovanadate Mn₂V₂O₇.
Physical Review Materials
, 3
(11)
, Article 113401. 10.1103/PhysRevMaterials.3.113401.
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Abstract
We have synthesized a single-crystalline sample of Mn₂V₂O₇ using the floating zone technique, and we investigated the ground state using magnetic susceptibility, heat capacity, and neutron diffraction. Our magnetic susceptibility and heat capacity reveal two successive magnetic transitions at T_{N1} = 17 K and T_{N2} = 11.8 K indicating two distinct magnetically ordered phases. The single-crystal neutron diffraction study shows that in the temperature (T) range 11.8 ≤ T ≤ 17 K the magnetic structure is commensurate with propagation vector k₁ = (0, 0.5, 0), while upon lowering temperature below T_{N2} = 11.8 K an incommensurate magnetic order emerges with k₂ = (0.38, 0.48, 0.5) and the magnetic structure can be represented by cycloidal modulation of the Mn spin in the ac plane. We discuss the role of magnetic exchange interactions and spin-orbital coupling on the stability of the observed magnetic phase transitions.
| Type: | Article |
|---|---|
| Title: | Commensurate to incommensurate magnetic phase transition in honeycomb-lattice pyrovanadate Mn₂V₂O₇ |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevMaterials.3.113401 |
| Publisher version: | https://doi.org/10.1103/PhysRevMaterials.3.113401 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Condensed Matter & Materials Physics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10087256 |
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