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dc.contributor.authorManna, Kaustuv
dc.contributor.authorBhadram, Venkata Srinu
dc.contributor.authorElizabeth, Suja
dc.contributor.authorNarayana, Chandrabhas
dc.contributor.authorKumar, P. S. Anil
dc.date.accessioned2017-02-16T11:32:47Z-
dc.date.available2017-02-16T11:32:47Z-
dc.date.issued2014
dc.identifier.citationManna, K; Bhadram, VS; Elizabeth, S; Narayana, C; Kumar, PSA, Octahedral distortion induced magnetic anomalies in LaMn0.5Co0.5O3 single crystals. Journal of Applied Physics 2014, 116 (4), 43903 http://dx.doi.org/10.1063/1.4891015en_US
dc.identifier.citationJournal of Applied Physicsen_US
dc.identifier.citation116en_US
dc.identifier.citation4en_US
dc.identifier.issn0021-8979
dc.identifier.urihttp://hdl.handle.net/10572/2310-
dc.descriptionRestricted Accessen_US
dc.description.abstractSingle crystals of LaMn0.5Co0.5O3 belonging to the ferromagnetic-insulator and distorted perovskite class were grown using a four-mirror optical float zone furnace. The as-grown crystal crystallizes into an orthorhombic Pbnm structure. The spatially resolved 2D Raman scan reveals a strain-induced distribution of transition metal (TM)-oxygen (O) octahedral deformation in the as-grown crystal. A rigorous annealing process releases the strain, thereby generating homogeneous octahedral distortion. The octahedra tilt by reducing the bond angle TM-O-TM, resulting in a decline of the exchange energy in the annealed crystal. The critical behavior is investigated from the bulk magnetization. It is found that the ground state magnetic behavior assigned to the strain-free LaMn0.5Co0.5O3 crystal is of the 3D Heisenberg kind. Strain induces mean field-like interaction in some sites, and consequently, the critical exponents deviate from the 3D Heisenberg class in the as-grown crystal. The temperature-dependent Raman scattering study reveals strong spin-phonon coupling and the existence of two magnetic ground states in the same crystal. (C) 2014 AIP Publishing LLC.en_US
dc.description.uri1089-7550en_US
dc.description.urihttp://dx.doi.org/10.1063/1.4891015en_US
dc.languageEnglishen
dc.language.isoEnglishen_US
dc.publisherAmerican Institute of Physicsen_US
dc.rights@American Institute of Physics, 2014en_US
dc.subjectApplied Physicsen_US
dc.subjectPhonon Raman-Scatteringen_US
dc.subjectLamn1-Xcoxo3en_US
dc.subjectNickelen_US
dc.subjectIronen_US
dc.subjectMnen_US
dc.subjectCoen_US
dc.titleOctahedral distortion induced magnetic anomalies in LaMn0.5Co0.5O3 single crystalsen_US
dc.typeArticleen_US
Appears in Collections:Research Articles (Chandrabhas N.)

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