Competing Ferri- and Antiferromagnetic phases in geometrically frustrated LuFe 2O 4

J. De Groot, K. Marty, M. D. Lumsden, A. D. Christianson, S. E. Nagler, S. Adiga, W. J.H. Borghols, K. Schmalzl, Z. Yamani, S. R. Bland, R. De Souza, U. Staub, W. Schweika, Y. Su, M. Angst

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Abstract

We present a detailed study of magnetism in LuFe 2O 4, 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.

Original languageEnglish
Article number037206
JournalPhysical Review Letters
Volume108
Issue number3
DOIs
StatePublished - Jan 20 2012

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