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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14096
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dc.contributor.authorKundu S.-
dc.contributor.authorNath T.K.-
dc.contributor.authorNigam A.K.-
dc.contributor.authorMaitra, Tulika-
dc.contributor.authorTaraphder A.-
dc.date.accessioned2020-10-15T12:36:51Z-
dc.date.available2020-10-15T12:36:51Z-
dc.date.issued2012-
dc.identifier.citationJournal of Nanoscience and Nanotechnology (2012), 12(2): 943-949-
dc.identifier.issn15334880-
dc.identifier.urihttps://doi.org/10.1166/jnn.2012.5193-
dc.identifier.urihttp://repository.iitr.ac.in/handle/123456789/14096-
dc.description.abstractThe fascinating phenomenon of destabilization of charge/orbital order in Nd 0.5Sr 0.5MnO 3 with the reduction of grain size is critically investigated. Based on our magnetic and transport experiments followed by a theoretical analysis, we analyze various possible mechanisms and try to delineate a universal scenario behind this phenomenon. We revisit this issue carefully and discuss various evidences from experiments in nano and bulk manganites on the absence of correlation between size reduction and pressure effects on manganites. We propose a phenomenological model based on enhanced surface disorder to explain the appearance of weak ferromagnetism and metallicity in nanosize Nd 0.5Sr 0.5MnO 3 system. All evidence seems to suggest that the transport is mediated through the surface via enhanced density of states in the nanometric grains. We provide theoretical support for this by performing an ab-initio electronic structure calculation as well as from a recent numerical simulation and argue that the mechanism is likely to be general in all nanosize charge ordered manganites. Copyright © 2012 American Scientific Publishers.-
dc.language.isoen_US-
dc.relation.ispartofJournal of Nanoscience and Nanotechnology-
dc.subjectCharge Ordering-
dc.subjectManganites-
dc.subjectSurface Disorder-
dc.titleMetallicity and ferromagnetism in nanosystem of charge ordered Nd 0.5Sr 0.5MnO 3-
dc.typeArticle-
dc.scopusid56220789900-
dc.scopusid7003663909-
dc.scopusid55604494700-
dc.scopusid7004183343-
dc.scopusid6602698909-
dc.affiliationKundu S., Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur 721302, India-
dc.affiliationNath, T.K., Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur 721302, India-
dc.affiliationNigam, A.K., Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Homi Bhaba Road, Colaba, Mumbai 400005, India-
dc.affiliationMaitra, T., Department of Physics, Indian Institute of Technology, Roorkee 247667, India-
dc.affiliationTaraphder, A., Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur 721302, India, Centre for Theoretical Studies, Indian Institute of Technology, Kharagpur 721302, India, Max Planck Institute fur Physik Komplexer Systeme, Notnitzer str. 38, 01187 Dresden, Germany-
dc.description.correspondingauthorNath, T.K.; Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur 721302, India-
Appears in Collections:Journal Publications [PH]

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