Ordered magnetic frustration
1991; Elsevier BV; Volume: 94; Issue: 3 Linguagem: Inglês
10.1016/0304-8853(91)90094-q
ISSN1873-4766
AutoresPhilippe Lacorre, J. Pannetier, Gérard Férey,
Tópico(s)Magnetic Properties of Alloys
ResumoThe magnetic structure of the tetragonal bronze-like KMnFeF6 is solved by means of neutron powder diffraction. The structure (space group Pb' a2') consists of a non-collinear arrangement of spins lying in the (a, b) plane of the crystal cell. Spins belonging to triangular platelets adopt a star arrangement very close to the ideal 120° configuration, whereas the arrangement in square platelets is almost exactly antiparallel. The magnetic structure of KMnFeF6 has been successfully simulated with the program MCMAG by assuming isotropic AF interactions between nearest magnetic neighbours (superexchange interactions).
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