Intrinsic avalanches and collective phenomena in a Mn(II)-free radical ferrimagnetic chain

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dc.creatorLhotel, E.
dc.creatorAmabilino, D. B.
dc.creatorSporer, C.
dc.creatorLuneau, D.
dc.creatorVeciana, J.
dc.creatorPaulsen, C.
dc.date2007-10-19
dc.date2008-02-11
dc.date.accessioned2026-07-07T10:02:06Z
dc.date.available2026-07-07T10:02:06Z
dc.descriptionMagnetic hysteresis loops below 300 mK on single crystals of the Mn(II) - nitronyl nitroxide free radical chain (Mn(hfac)_2({\it R})-3MLNN) present abrupt reversals of the magnetization, or avalanches. We show that, below 200 mK, the avalanches occur at a constant field, independent of the sample and so propose that this avalanche field is an intrinsic property. We compare this field to the energy barrier existing in the sample and conclude that the avalanches are provoked by multiple nucleation of domain-walls along the chains. The different avalanche field observed in the zero field cooled magnetization curves suggests that the avalanche mechanisms are related to the competition between ferromagnetic and antiferromagnetic order in this compound.
dc.description9 pages, 7 fig, to be published in Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/0710.3707
dc.identifierhttp://arxiv.org/abs/0710.3707
dc.identifierPhys. Rev. B 77, 064416 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.064416
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/168857
dc.subjectMaterials Science
dc.subjectOther Condensed Matter
dc.titleIntrinsic avalanches and collective phenomena in a Mn(II)-free radical ferrimagnetic chain
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