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Simultaneous antiferromagnetic Fe3+ and Nd3+ ordering in NdFe3((BO3)-B-11)(4) / P. . Fischer [et al.] // J. Phys.: Condens. Matter. - 2006. - Vol. 18, Is. 34. - P. 7975-7989, DOI 10.1088/0953-8984/18/34/010. - Cited References: 20 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
PHASE-TRANSITION
   DIFFRACTION
   CRYSTALS
   GDFE3(BO3)(4)
   SINQ
Кл.слова (ненормированные):
Iron compounds -- Magnetic moments -- Magnetization -- Neodymium compounds -- Neutron diffraction -- Vectors -- Crystal-field effects -- Free ion moment -- Specific heat measurements -- Symmetry analysis -- Antiferromagnetic materials
Аннотация: By means of magnetic susceptibility and specific heat measurements, x-ray and unpolarized neutron diffraction investigations on powder and single-crystal samples, simultaneous long-range antiferromagnetic Fe and Nd ordering in NdFe3((BO3)-B-11)(4) with R32 chemical structure has been found at temperatures below T-N = 30.5(5) K down to 1.6 K. At temperatures down to 19 K the propagation vector is k(hex) = [0, 0, 3/2] and becomes slightly incommensurate at lower temperatures. Combined with symmetry analysis, best powder neutron profile fits are obtained with magnetic spiral configurations with the magnetic moments oriented parallel to the hexagonal basal plane according to the irreducible representations tau(3) in the commensurate case. This is in agreement with the easy directions of magnetization perpendicular to the c-axis as determined by magnetic susceptibility measurements. At 1.6 K the magnetic Fe moment amounts to 4.9 mu(B) B close to the free ion moment of Fe3+. The magnetic Nd3+ moment saturates presumably due to crystal-field effects at 2.7 mu(B).

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Держатели документа:
ETH, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
Paul Scherrer Inst, CH-5232 Villigen, Switzerland
Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
RAS, SB, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Laboratory for Neutron Scattering, ETH Zurich, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
Physik Department E21, TU Munchen, D-85748 Garching, Germany
Institute of Physics SB RAS, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Fischer, P.; Pomjakushin, V.; Sheptyakov, D.; Keller, L.; Janoschek, M.; Roessli, B.; Schefer, J.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
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