Local electronic structure and magnetic properties of LaMn0.5Co0.5O3 studied by x-ray absorption and magnetic circular dichroism spectroscopy

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dc.creatorBurnus, T.
dc.creatorHu, Z.
dc.creatorHsieh, H. H.
dc.creatorJoly, V. L. J.
dc.creatorJoy, P. A.
dc.creatorHaverkort, M. W.
dc.creatorWu, Hua
dc.creatorTanaka, A.
dc.creatorLin, H. -J.
dc.creatorChen, C. T.
dc.creatorTjeng, L. H.
dc.date2007-09-20
dc.date2008-03-17
dc.date.accessioned2026-07-07T09:26:45Z
dc.date.available2026-07-07T09:26:45Z
dc.descriptionWe have studied the local electronic structure of LaMn0.5Co0.5O3 using soft-x-ray absorption spectroscopy at the Co-L_3,2 and Mn-L_3,2 edges. We found a high-spin Co^{2+}--Mn^{4+} valence state for samples with the optimal Curie temperature. We discovered that samples with lower Curie temperatures contain low-spin nonmagnetic Co^{3+} ions. Using soft-x-ray magnetic circular dichroism we established that the Co^{2+} and Mn^{4+} ions are ferromagnetically aligned. We revealed also that the Co^{2+} ions have a large orbital moment: m_orb/m_spin ~ 0.47. Together with model calculations, this suggests the presence of a large magnetocrystalline anisotropy in the material and predicts a non-trivial temperature dependence for the magnetic susceptibility.
dc.description8 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0709.3243
dc.identifierhttp://arxiv.org/abs/0709.3243
dc.identifierPhys. Rev. B 77, 125124 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.125124
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/156863
dc.subjectStrongly Correlated Electrons
dc.titleLocal electronic structure and magnetic properties of LaMn0.5Co0.5O3 studied by x-ray absorption and magnetic circular dichroism spectroscopy
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