The high temperature Jahn-Teller transition in LaMn7O12

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dc.creatorCabassi, R.
dc.creatorBolzoni, F.
dc.creatorGilioli, E.
dc.creatorBissoli, F.
dc.creatorProdi, A.
dc.creatorGauzzi, A.
dc.date2009-05-10
dc.date.accessioned2026-07-07T13:13:36Z
dc.date.available2026-07-07T13:13:36Z
dc.descriptionA first order structural Jahn-Teller transition at T_{JT} = 650 K has been recently reported for the quadruple perovskite LaMn7O12 . We have carried out magnetization and transport measurements below and above T_{JT} in order to investigate the effect of the transition. Electrical conduction turns out to be polaronic, changing from non-adiabatic to adiabatic through the transition. Magnetic behavior can be described by non-interacting Mn3+ ions below T_{JT}, while above T_{JT} it is of questionable interpretation. The effect of thermal cycling on as grown samples of different purity degree also allowed us to clarify the intrinsic magnetic response of LaMn7O12 at lower temperatures.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0905.1500
dc.identifierhttp://arxiv.org/abs/0905.1500
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229943
dc.subjectMaterials Science
dc.subjectOther Condensed Matter
dc.titleThe high temperature Jahn-Teller transition in LaMn7O12
dc.typetext

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