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Title: Intertwining of Frustration with Magneto-Elastic Coupling in the Multiferroic LuMnO3

Residual magnetic frustration in the multiferroic LuMnO3 may be key towards understanding magneto-elastic coupling in hexagonal manganites. Critical magnetic scattering present well above the magnetic ordering temperature TN persists below, as observed by inelastic neutron scattering. The magnetic fluctuations are confined in two dimensions implied by the characteristic wavevector dependence of the magnetic structure factor that changes from symmetric to asymmetric across TN. The low dimensionality of the magnetic structure is also evident in the temperature dependence of the commensurate antiferromagnetic intensity which follows a mean field exponent of 0.2.
 [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [4]
  1. University of Virginia
  2. ORNL
  3. National Institute of Standards and Technology (NIST), Gaithersburg, MD
  4. Rutgers University
Publication Date:
OSTI Identifier:
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the Physical Society of Japan; Journal Volume: 83; Journal Issue: 2
Research Org:
Oak Ridge National Laboratory (ORNL); High Flux Isotope Reactor (HFIR)
Sponsoring Org:
SC USDOE - Office of Science (SC)
Country of Publication:
United States