Neutron diffraction, ac susceptibility and low field dc magnetic measurements were performed on the ternary intermetallic phase Y3Co8Sn4. This compound displays a ferromagnetic transition at 53 K and then undergoes a further transition below 10 K into an incommensurate anti ferromagnetic modulated structure. The low temperature magnetic structure is a long period sine or helical modulation with a propagation vector of [0.095, 0, 0] corresponding to a modulation length of about 80 Angstrom at 1.6 K. A possible mechanism for such a peculiar behaviour is a change from a high temperature itinerant character of the magnetic interactions to a low temperature localized magnetic state in a multi-sublattice system.
Ferromagnetic and incommensurate antiferromagnetic order in a multi-sublattice itinerant magnet: Y3Co8Sn4
CANEPA, FABIO MICHELE;
2005-01-01
Abstract
Neutron diffraction, ac susceptibility and low field dc magnetic measurements were performed on the ternary intermetallic phase Y3Co8Sn4. This compound displays a ferromagnetic transition at 53 K and then undergoes a further transition below 10 K into an incommensurate anti ferromagnetic modulated structure. The low temperature magnetic structure is a long period sine or helical modulation with a propagation vector of [0.095, 0, 0] corresponding to a modulation length of about 80 Angstrom at 1.6 K. A possible mechanism for such a peculiar behaviour is a change from a high temperature itinerant character of the magnetic interactions to a low temperature localized magnetic state in a multi-sublattice system.
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