Surface phase separation in nanosized charge-ordered manganites

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dc.creatorDong, S.
dc.creatorGao, F.
dc.creatorWang, Z. Q.
dc.creatorLiu, J. -M.
dc.creatorRen, Z. F.
dc.date2006-12-15
dc.date2007-02-25
dc.date.accessioned2026-07-07T07:48:20Z
dc.date.available2026-07-07T07:48:20Z
dc.descriptionRecent experiments showed that the robust charge-ordering in manganites can be weakened by reducing the grain size down to nanoscale. Weak ferromagnetism was evidenced in both nanoparticles and nanowires of charge-ordered manganites. To explain these observations, a phenomenological model based on surface phase separation is proposed. The relaxation of superexchange interaction on the surface layer allows formation of a ferromagnetic shell, whose thickness increases with decreasing grain size. Possible exchange bias and softening of the ferromagnetic transition in nanosized charge-ordered manganites are predicted.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0612391
dc.identifierhttp://arxiv.org/abs/cond-mat/0612391
dc.identifierAppl.Phys.Lett.90,082508(2007)
dc.identifierdoi:10.1063/1.2709911
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/124461
dc.subjectMaterials Science
dc.subjectStrongly Correlated Electrons
dc.titleSurface phase separation in nanosized charge-ordered manganites
dc.typetext

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