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Crystallographic and magnetic structure of ZnV\(\mathsf{_2}\)O\(\mathsf{_4}\)

Structural phase transition due to spin-driven Jahn-Teller distortions
  • M. Reehuis
  • A. KrimmelEmail author
  • N. Büttgen
  • A. Loidl
  • A. Prokofiev
OriginalPaper

Abstract.

We report on the crystallographic and magnetic structure of the geometrically frustrated spinel ZnV2O4 as determined by neutron powder diffraction. At T = 51 K, a cubic-to-tetragonal phase transition takes place. The low temperature crystallographic structure is characterized by the space group I41/amd and unit cell dimensions \({a/\sqrt{2} \times a/\sqrt{2} \times a}\) with a being the lattice constant of the cubic phase. The corresponding antiferromagnetic structure of the vanadium sublattice can be described by a propagation vector \({{\bf k} = (001)}\) with the magnetic moments being aligned parallel to the c-axis. The ordered magnetic moment is 0.65(5) \({\mu_B}\) per V3+ ion. The experimental results are in accord with recent theoretical models proposing spin-driven Jahn-Teller distortions. The results are also compared with reports on non-ordering ZnV2O4.

Keywords

Phase Transition Vanadium Theoretical Model Lattice Constant Powder Diffraction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  • M. Reehuis
    • 1
  • A. Krimmel
    • 1
    Email author
  • N. Büttgen
    • 1
  • A. Loidl
    • 1
  • A. Prokofiev
    • 2
  1. 1.Experimentalphysik V, Elektronische Korrelationen und Magnetismus, Institut für PhysikUniversität AugsburgAugsburgGermany
  2. 2.Physikalisches InstitutJohann Wolfgang Goethe-UniversitätFrankfurtGermany

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