Ordering process and ferroelectricity in a spinel derived from FeV2O4

Abstract

The spinel FeV2O4 is known to exhibit peculiar physical properties, which is generally ascribed to the unusual presence of two cations showing a pronounced interplay between spin, orbital and lattice degrees of freedom (Fe2+ and V3+ on the tetrahedral and octahedral sites, respectively). The present work reports on an experimental re-investigation of this material based on a broad combination of techniques, including x-ray diffraction, energy dispersive and Mössbauer spectroscopies, as well as magnetization, heat capacity, dielectric and polarization measurements. Special attention was firstly paid to establish the exact cationic composition of the investigated samples, which was found to be Fe1.18V1.82O4. All the physical properties were found to point out a complex ordering process with a structural transition at TS = 138 K, followed by two successive magnetostructural transitions at TN1 = 111 K and TN2 = 56 K. This latter transition marking the appearance of electric polarization, magnetization data were analysed in details to discuss the nature of the magnetic state at T< TN2. An overall interpretation of the sequence of transitions was proposed, taking into account two spin couplings, as well as the Jahn-Teller effects and the mechanism of spin-orbit stabilization. Finally, the origin of ferroelectricity in Fe1.18V1.82O4 is discussed on the basis of recent models.

26 pages, 9 figures,59 references.Accepted by Physical Review B

References in corpus (13)

• Spin current and magneto-electric effect in non-collinear magnets
• Ferroelectric polarization flop in a frustrated magnet MnWO${}_4$ induced by magnetic fields
• Spin-polarization coupling in multiferroic transition-metal oxides
• Ferroelectricity induced by acentric spin-density waves in YMn${}_2$O${}_5$
• Magnetic and orbital ordering in the spinel MnV2O4
• Orbital and spin chains in ZnV2O4
• Canted-spin-caused electric dipoles: a local symmetry theory
• Proposed Orbital Ordering in MnV2O4 from First-principles Calculations
• CdV2O4: A rare example of a collinear multiferroic spinel
• Coupled magnetic and ferroelectric domains in multiferroic Ni3V2O8
• Orbital and magnetic transitions in geometrically-frustrated vanadium spinels -- Monte Carlo study of an effective spin-orbital-lattice coupled model --
• Ferroelectricity from spin supercurrents in LiCuVO4
• Helical magnetic state in the distorted triangular lattice of alpha-CaCr2O4

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