UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Orbital frustration in the S = ½ kagome magnet vesignieite, BaCu3V2O8(OH)2

Boldrin, D; Knight, K; Wills, AS; (2016) Orbital frustration in the S = ½ kagome magnet vesignieite, BaCu3V2O8(OH)2. Journal of Materials Chemistry C , 4 (43) pp. 10315-10322. 10.1039/c6tc02935c. Green open access

[thumbnail of Wills_Orbital frustration_S 1-2_kagome_.pdf]
Preview
Text
Wills_Orbital frustration_S 1-2_kagome_.pdf - Accepted version

Download (2MB) | Preview

Abstract

Here we report crystallographic and magnetic studies on high quality samples of the magnetically frustrated S = ½ kagome antiferromagnet vesignieite, BaCu3V2O8(OD)2. Powder neutron diffraction data collected from samples obtained by a new hydrothermal synthetic route reveal a previously unobserved trigonal P3121 structure, similar to the isoelectronic mineral SrCu3V2O8(OH)2. The refined structure is consistent with orbital frustration of the eg d-orbitals in a sublattice of the Cu2+ kagome network due to a dynamic Jahn–Teller effect, which persists below the magnetic transition at TN = 9 K and makes the material an interesting candidate for exploring concomitant spin and orbital frustration. A combination of crystallographic strain analysis and magnetisation measurements indicate strong magnetostructural coupling which may explain the varied magnetic behaviour between samples of vesignieite in the literature. The revised orbital structure is similar to that found in volborthite, rather than the quantum spin liquid herbertsmithite, and provides a convincing argument for the differing magnetic properties found in these frustrated magnets.

Type: Article
Title: Orbital frustration in the S = ½ kagome magnet vesignieite, BaCu3V2O8(OH)2
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/c6tc02935c
Publisher version: http://doi.org/10.1039/c6tc02935c
Language: English
Additional information: Copyright © 2017 The Royal Society of Chemistry. All rights reserved.
Keywords: Science & Technology, Technology, Physical Sciences, Materials Science, Multidisciplinary, Physics, Applied, Materials Science, Physics, Muon Spin Relaxation, Antiferromagnet, Lattice, Degeneracy, State
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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 > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1520244
Downloads since deposit
64Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item