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Title: Neutron diffraction study of YVO{sub 3}, NdVO{sub 3}, and TbVO{sub 3}

Abstract

The structural and magnetic properties of YVO{sub 3}, NdVO{sub 3} and TbVO{sub 3} were investigated by single-crystal and powder neutron diffraction. YVO{sub 3} shows a structural phase transition at 200 K from an orthorhombic structure with the space group Pbnm to a monoclinic one with the space group P2{sub 1}/b. But supplementary high-resolution synchrotron diffraction experiments showed that the monoclinic distortion is extremely small. A group theoretical analysis shows that this magnetic state in the monoclinic phase is incompatible with the lattice structure, unless terms of higher than bilinear order in the spin operators are incorporated in the spin Hamiltonian. This observation is discussed in the light of recent theories invoking unusual many-body correlations between the vanadium t{sub 2g} orbitals. A structural phase transition back to the orthorhombic space group Pbnm is observed upon cooling below 77 K. This transition is accompanied by a rearrangement of the magnetic structure into a mode compatible with the lattice structure. The crystal structures of NdVO{sub 3} and TbVO{sub 3} are closely similar to that of YVO{sub 3}. However, only a single magnetic phase transition was found in the vanadium sublattice down to 9.5 K. Below 60 K the magnetic moments of the Nd{supmore » 3+}- and Tb{sup 3+}-ions are gradually polarized by the ordered vanadium moments. Below 11 K, we found a noncollinear order of the terbium moments.« less

Authors:
 [1];  [2]; ;  [1];  [3];  [4]; ;  [5];  [6];  [7];  [8];  [8];  [9]
  1. Max-Planck-Institut fuer Festkoerperforschung, D-70569 Stuttgart (Germany)
  2. (Germany)
  3. SNBL at ESRF, BP 220, F-38042 Grenoble Cedex 9 (France)
  4. (Switzerland)
  5. Institut Laue-Langevin, BP 156, F-38042 Grenoble Cedex 9 (France)
  6. Forschungszentrum Juelich GmbH, D-52425 Juelich (Germany)
  7. CEA Grenoble, Departement de Recherche Fondamentale sur la Matiere Condensee, 38054 Grenoble cedex 9 (France)
  8. Department of Applied Physics, University of Tokyo, 113 Tokyo (Japan)
  9. (CERC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8562 (Japan)
Publication Date:
OSTI Identifier:
20787963
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 73; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevB.73.094440; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; HAMILTONIANS; MAGNETIC MATERIALS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MANY-BODY PROBLEM; MONOCLINIC LATTICES; MONOCRYSTALS; NEODYMIUM COMPOUNDS; NEODYMIUM IONS; NEUTRON DIFFRACTION; ORTHORHOMBIC LATTICES; PHASE TRANSFORMATIONS; SPIN; TERBIUM; TERBIUM COMPOUNDS; TERBIUM IONS; VANADATES; VANADIUM; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS

Citation Formats

Reehuis, M., Hahn-Meitner-Institut, D-14109 Berlin, Ulrich, C., Keimer, B., Pattison, P., Laboratory of Crystallography, Swiss Federal Institute of Technology, BSP-Dorigny, CH-1015 Lausanne, Ouladdiaf, B., Rheinstaedter, M. C., Ohl, M., Regnault, L. P., Miyasaka, M., Tokura, Y., and Correlated Electron Research Center. Neutron diffraction study of YVO{sub 3}, NdVO{sub 3}, and TbVO{sub 3}. United States: N. p., 2006. Web. doi:10.1103/PHYSREVB.73.0.
Reehuis, M., Hahn-Meitner-Institut, D-14109 Berlin, Ulrich, C., Keimer, B., Pattison, P., Laboratory of Crystallography, Swiss Federal Institute of Technology, BSP-Dorigny, CH-1015 Lausanne, Ouladdiaf, B., Rheinstaedter, M. C., Ohl, M., Regnault, L. P., Miyasaka, M., Tokura, Y., & Correlated Electron Research Center. Neutron diffraction study of YVO{sub 3}, NdVO{sub 3}, and TbVO{sub 3}. United States. doi:10.1103/PHYSREVB.73.0.
Reehuis, M., Hahn-Meitner-Institut, D-14109 Berlin, Ulrich, C., Keimer, B., Pattison, P., Laboratory of Crystallography, Swiss Federal Institute of Technology, BSP-Dorigny, CH-1015 Lausanne, Ouladdiaf, B., Rheinstaedter, M. C., Ohl, M., Regnault, L. P., Miyasaka, M., Tokura, Y., and Correlated Electron Research Center. Wed . "Neutron diffraction study of YVO{sub 3}, NdVO{sub 3}, and TbVO{sub 3}". United States. doi:10.1103/PHYSREVB.73.0.
@article{osti_20787963,
title = {Neutron diffraction study of YVO{sub 3}, NdVO{sub 3}, and TbVO{sub 3}},
author = {Reehuis, M. and Hahn-Meitner-Institut, D-14109 Berlin and Ulrich, C. and Keimer, B. and Pattison, P. and Laboratory of Crystallography, Swiss Federal Institute of Technology, BSP-Dorigny, CH-1015 Lausanne and Ouladdiaf, B. and Rheinstaedter, M. C. and Ohl, M. and Regnault, L. P. and Miyasaka, M. and Tokura, Y. and Correlated Electron Research Center},
abstractNote = {The structural and magnetic properties of YVO{sub 3}, NdVO{sub 3} and TbVO{sub 3} were investigated by single-crystal and powder neutron diffraction. YVO{sub 3} shows a structural phase transition at 200 K from an orthorhombic structure with the space group Pbnm to a monoclinic one with the space group P2{sub 1}/b. But supplementary high-resolution synchrotron diffraction experiments showed that the monoclinic distortion is extremely small. A group theoretical analysis shows that this magnetic state in the monoclinic phase is incompatible with the lattice structure, unless terms of higher than bilinear order in the spin operators are incorporated in the spin Hamiltonian. This observation is discussed in the light of recent theories invoking unusual many-body correlations between the vanadium t{sub 2g} orbitals. A structural phase transition back to the orthorhombic space group Pbnm is observed upon cooling below 77 K. This transition is accompanied by a rearrangement of the magnetic structure into a mode compatible with the lattice structure. The crystal structures of NdVO{sub 3} and TbVO{sub 3} are closely similar to that of YVO{sub 3}. However, only a single magnetic phase transition was found in the vanadium sublattice down to 9.5 K. Below 60 K the magnetic moments of the Nd{sup 3+}- and Tb{sup 3+}-ions are gradually polarized by the ordered vanadium moments. Below 11 K, we found a noncollinear order of the terbium moments.},
doi = {10.1103/PHYSREVB.73.0},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 9,
volume = 73,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2006},
month = {Wed Mar 01 00:00:00 EST 2006}
}
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