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arxiv: 1111.0746 · v1 · submitted 2011-11-03 · ❄️ cond-mat.str-el

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Competing Ferri- and Antiferromagnetic Phases in Geometrically Frustrated LuFe2O4

J. de Groot , K. Marty , M.D. Lumsden , A.D. Christianson , S.E. Nagler , S. Adiga , W.J.H. Borghols , K. Schmalzl
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Z. Yamani S.R. Bland R. de Souza U. Staub W. Schweika Y. Su M. Angst
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classification ❄️ cond-mat.str-el
keywords magneticphasesdiffractionlufe2o4neutronphaseaboveantiferro-
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We present a detailed study of magnetism in LuFe2O4, combining magnetization measurements with neutron and soft x-ray diffraction. The magnetic phase diagram in the vicinity of T_N involves a metamagnetic transition separating an antiferro- and a ferrimagnetic phase. For both phases the spin structure is refined by neutron diffraction. Observed diffuse magnetic scattering far above T_N is explained in terms of near degeneracy of the magnetic phases.

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