skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Structural transition and orbital glass physics in near-itinerant CoV2O4

Journal Article · · Physical Review B
 [1];  [1];  [2];  [2];  [2];  [2];  [3];  [4];  [1]
  1. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States); Florida State Univ., Tallahassee, FL (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)

In this study, the ferrimagnetic spinel CoV2O4 has been a topic of intense recent interest, both as a frustrated insulator with unquenched orbital degeneracy and as a near-itinerant magnet which can be driven metallic with moderate applied pressure. Here, we report on our recent neutron di raction and inelastic scattering measurements on powders with minimal cation site disorder. Our main new result is the identification of a weak (Δa/a ~ 10–4), first order structural phase transition at T* = 90 K, the same temperature where spin canting was seen in recent single crystal measurements. This transition is characterized by a short-range distortion of oxygen octahedral positions, and inelastic data further establish a weak 1.25meV spin gap at low temperature. Together, these findings provide strong support for the local orbital picture and the existence of an orbital glass state at temperatures below T*.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1238026
Alternate ID(s):
OSTI ID: 1235951; OSTI ID: 1335333
Journal Information:
Physical Review B, Vol. 93, Issue 1; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

References (53)

Frustrated Magnetism and Cooperative Phase Transitions in Spinels journal January 2010
Structural and magnetic studies on vanadium spinel MgV2O4 journal April 1997
Magnetic and Structural Transitions in (Li x Zn 1 - x )V 2 O 4 with the Spinel Structure journal March 1997
Local order and frustration in the geometrically frustrated spinels Cd 1 x Zn x V 2 O 4 journal July 2006
A pseudotetramer in the geometrically frustrated spinel system CdV 2 O 4 journal July 2002
A distortion of pseudotetramers coupled with the Jahn Teller effect in the geometrically frustrated spinel system CdV 2 O 4 journal January 2003
Crystallographic and magnetic structure of ZnV $\mathsf{_2}$ O $\mathsf{_4}$ journal October 2003
Orbital and Spin Chains in Z n V 2 O 4 journal October 2004
Spin and orbital order in the vanadium spinel MgV 2 O 4 journal October 2010
Magnetic Field Induced Transition in Vanadium Spinels journal January 2014
Magnetic-Field Switching of Crystal Structure in an Orbital-Spin-Coupled System: MnV 2 O 4 journal November 2005
Orbital Ordering and Magnetic Field Effect in MnV 2 O 4 journal March 2007
Spin ordering and orbital ordering transitions in Mn V 2 O 4 journal November 2007
Magnetic and Orbital Ordering in the Spinel MnV 2 O 4 journal February 2008
Magnetic excitations and orbital physics in the ferrimagnetic spinels Mn B 2 O 4 ( B = Mn , V ) journal February 2008
Orbital-spin-coupled fluctuations in spinel vanadate MnV 2 O 4 journal February 2013
Magnon spectra and strong spin-lattice coupling in magnetically frustrated Mn B 2 O 4 ( B = Mn ,V): Inelastic light-scattering studies journal April 2014
Orbital structures in spinel vanadates A V 2 O 4 ( A = Fe, Mn) journal September 2012
Structural and Magnetic Properties of Spinel FeV 2 O 4 with Two Ions Having Orbital Degrees of Freedom journal May 2008
Magnetic order and ice rules in the multiferroic spinel FeV 2 O 4 journal August 2012
Ordering process and ferroelectricity in a spinel derived from FeV 2 O 4 journal February 2012
Valence states and spin structure of spinel FeV 2 O 4 with different orbital degrees of freedom journal April 2012
Magnons and a two-component spin gap in FeV 2 O 4 journal June 2014
Magnetic excitations and anomalous spin-wave broadening in multiferroic Fe V 2 O 4 journal June 2014
Magnetic Transitions in Cubic Spinels journal March 1962
Co [ V 2 ] O 4 : A Spinel Approaching the Itinerant Electron Limit journal February 2011
Magnetic, structural, and thermal properties of CoV 2 O 4 journal January 2012
Orbital and magnetic transitions in geometrically frustrated vanadium spinels: Monte Carlo study of an effective spin-orbital-lattice coupled model journal November 2004
Magnetic transition and orbital degrees of freedom in vanadium spinels journal August 2003
Structural, Orbital, and Magnetic Order in Vanadium Spinels journal October 2004
Orbital Order in ZnV 2 O 4 journal September 2007
Magnetic excitations in vanadium spinels journal December 2007
Proposed Orbital Ordering in MnV 2 O 4 from First-Principles Calculations journal May 2009
Quantum 120 ° model on pyrochlore lattice: Orbital ordering in MnV 2 O 4 journal March 2010
Orbital ordering in FeV 2 O 4 : Spinel with two orbitally active sites journal December 2011
The preparation and properties of some vanadium spinels journal March 1963
Electrical Conductivity in the Spinel System Co 1— x Li x V 2 O 4 journal March 1964
Enhanced Pressure Dependence of Magnetic Exchange in A 2 + [ V 2 ] O 4 Spinels Approaching the Itinerant Electron Limit journal November 2007
Homopolar Bond Formation in ZnV 2 O 4 Close to a Metal-Insulator Transition journal December 2008
The nature of itineracy in CoV 2 O 4 : a first-principles study journal January 2014
Dielectric properties of single crystal spinels in the series FeV 2 O 4 , MnV 2 O 4 , and CoV 2 O 4 in high magnetic fields journal February 2013
Chemical pressure effects on structural, magnetic, and transport properties of Mn 1 x Co x V 2 O 4 journal November 2011
Strong competition between orbital ordering and itinerancy in a frustrated spinel vanadate journal January 2015
Orbitally Induced Peierls State in Spinels journal April 2005
Orbital Freezing and Orbital Glass State in F e C r 2 S 4 journal January 2005
Kinetically inhibited order in a diamond-lattice antiferromagnet journal September 2011
Single crystal growth and electrical transport properties of intermediates in the spinel system CO1+δV2−δO4 journal September 1966
The high-resolution powder diffractometer at the high flux isotope reactor journal March 2010
The Nanoscale Ordered MAterials Diffractometer NOMAD at the Spallation Neutron Source SNS
  • Neuefeind, Jörg; Feygenson, Mikhail; Carruth, John
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 287 https://doi.org/10.1016/j.nimb.2012.05.037
journal September 2012
Recent advances in magnetic structure determination by neutron powder diffraction journal October 1993
PDFfit2 and PDFgui: computer programs for studying nanostructure in crystals journal July 2007
Recent progress on HYSPEC, and its polarization analysis capabilities journal January 2015
Metal-Insulator Transitions in Pure and Doped V 2 O 3 journal March 1973

Cited By (3)

Enhanced orbital fluctuations in Mg-doped Mn V 2 O 4 single crystals journal December 2019
Spin-Orbital Correlated Dynamics in the Spinel-Type Vanadium Oxide MnV 2 O 4 journal July 2017
A variety of elastic anomalies in orbital-active nearly-itinerant cobalt vanadate spinel text January 2017

Similar Records

Spin canting and orbital order in spinel vanadate thin films
Journal Article · Thu Oct 25 00:00:00 EDT 2018 · Physical Review Materials · OSTI ID:1238026

Polyhedral Distortions and Unusual Magnetic Order in Spinel FeMn2O4
Journal Article · Tue Mar 14 00:00:00 EDT 2023 · Chemistry of Materials · OSTI ID:1238026

Magnetic Frustration Driven by Itinerancy in Spinel CoV2O4
Journal Article · Thu Dec 07 00:00:00 EST 2017 · Scientific Reports · OSTI ID:1238026