Competing ferri- and antiferromagnetic phases in geometrically frustrated LuFe2O4

We present a detailed study of magnetism in LuFe(2)O(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 st...

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Bibliographic Details
Published in:Physical review letters 2012-01, Vol.108 (3), p.037206-037206
Main Authors: de Groot, J, Marty, K, Lumsden, M D, Christianson, A D, Nagler, S E, Adiga, S, Borghols, W J H, Schmalzl, K, Yamani, Z, Bland, S R, de Souza, R, Staub, U, Schweika, W, Su, Y, Angst, M
Format: Article
Language:English
Subjects:
ANTIFERROMAGNETISM
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
FERRIMAGNETISM
FERRITES
LUTETIUM COMPOUNDS
MAGNETISM
MAGNETIZATION
NEUTRON DIFFRACTION
PHASE DIAGRAMS
SCATTERING
SPIN
X-RAY DIFFRACTION
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Summary:We present a detailed study of magnetism in LuFe(2)O(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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.108.037206