An orbital glass state of a nearly metallic spinel, CoV${}_2$O${}_4$

Abstract

Strain, magnetization, and unpolarized and polarized neutron diffraction measurements were performed to study the magnetic and structural properties of spinel CoV${}_2$O${}_4$. Magnetostriction measurements indicate that a subtle distortion of the crystal along the direction of magnetization, $\Delta L/L\sim 10^{-4}$, exists and varies from elongation to contraction in a second order fashion upon cooling. Unpolarized and polarized single-crystal neutron experiments indicate that upon cooling the ferrimagnetic structure changes from collinear to noncollinear at $T\sim 90$ K, where the elongation of the crystal is maximized. These results imply the existence of an orbital glassy state in the nearly metallic frustrated magnet CoV${}_2$O${}_4$.

5 pages, 4 figures

References in corpus (6)

• Magnetic and orbital ordering in the spinel MnV2O4
• Ordering process and ferroelectricity in a spinel derived from FeV2O4
• Magnetic order and ice rules in the multiferroic spinel FeV2O4
• Strong competition between orbital-ordering and itinerancy in a frustrated spinel vanadate
• Magnon spectra and strong spin-lattice coupling in magnetically frustrated MnB2O4 (B = Mn,V): Inelastic light scattering studies
• Two inequivalent sublattices and orbital ordering in MnV2O4 studied by 51V NMR

Cited by in corpus (11)

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• Emergent superconductivity in single crystalline ${\mathrm{MgTi}}_2{\mathrm{O}}_4$ films via structural engineering
• A complete description of the magnetic ground state in spinel vanadates
• Electronic States and Possible Origin of the Orbital-Glass State in a Nearly Metallic Spinel Cobalt Vanadate: An X-ray Magnetic Circular Dichroism Study
• A variety of elastic anomalies in orbital-active nearly-itinerant cobalt vanadate spinel
• Spin Canting and Orbital Order in Spinel Vanadate Thin Films
• Orientation-dependent stabilization of MgCr${}_2$O${}_4$ spinel thin films
• Large Magnetic Anisotropy and Magnetostriction in Thin Films of CoV${}_2$O${}_4$
• Orbital order and electron itinerancy in CoV${}_2$O${}_4$ and Mn${}_{0.5}$Co${}_{0.5}$V${}_2$O${}_4$ from first principles
• Magnetic resonance study of rare-earth titanates
• Localized-delocalized crossover of spin-carriers and magnetization reversal in Co${}_2$VO${}_4$