Magnetic order and ice rules in the multiferroic spinel FeV2O4

Abstract

We present a neutron diffraction study of FeV2O4, which is rare in exhibiting spin and orbital degrees of freedom on both cation sublattices of the spinel structure. Our data confirm the existence of three structural phase transitions previously identified with x-ray powder diffraction, and reveal that the lower two transitions are associated with sequential collinear and canted ferrimagnetic transitions involving both cation sites. Through consideration of local crystal and spin symmetry, we further conclude that Fe2+ cations are ferro-orbitally ordered below 135K and V3+ orbitals order at 60K in accordance with predictions for vanadium spinels with large trigonal distortions and strong spin-orbit coupling. Intriguingly, the direction of ordered vanadium spins at low temperatures obey `ice rules' more commonly associated with the frustrated rare-earth pyrochlore systems.

arXiv comment10 pages, 9 figures, including Supplemental Material

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Cited by in corpus (17)

• An orbital glass state of a nearly metallic spinel, CoV${}_2$O${}_4$
• Structural transition and orbital glass physics in near itinerant CoV2O4
• Polyhedral distortions and unusual magnetic order in spinel FeMn${}_2$O${}_4$
• Strong competition between orbital-ordering and itinerancy in a frustrated spinel vanadate
• Magnons and a two-component spin gap in FeV2O4
• Magnetic and Structural Phase Transitions in the Spinel Compound Fe1+xCr2-xO4
• Orbital Ordering in Fe${}_{1-x}$Mn${}_x$V${}_2$O${}_4$: A First Principles Study
• Deviation from the dipole-ice model in the new spinel spin-ice candidate, MgEr${}_2$Se${}_4$
• A complete description of the magnetic ground state in spinel vanadates
• Magnetic excitations and anomalous spin wave broadening in multiferroic FeV2O4
• Evolution of the magnetic and structural properties of Fe${}_{1-x}$Co${}_x$V${}_2$O${}_4$
• A variety of elastic anomalies in orbital-active nearly-itinerant cobalt vanadate spinel
• Spin Canting and Orbital Order in Spinel Vanadate Thin Films
• Phonon dispersion, Raman spectra and evidence for spin-phonon coupling in MnV${}_2$O${}_4$ from first-principles
• Domain wall patterning and giant response functions in ferrimagnetic spinels
• Large Magnetic Anisotropy and Magnetostriction in Thin Films of CoV${}_2$O${}_4$
• Localized-delocalized crossover of spin-carriers and magnetization reversal in Co${}_2$VO${}_4$