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dc.contributor.author Guitarra, S.R.
dc.contributor.author Caneiro, Alberto
dc.contributor.author Niebieskikwiat, D.
dc.date.available 2016-01-11T14:54:17Z
dc.date.issued 2015-05-11
dc.identifier.citation Guitarra, S.R.; Caneiro, Alberto; Niebieskikwiat, D.; Disorder effects in the S1⁄41 antiferromagnetic spin ladder CaV2O4; Elsevier Science; Journal Of Magnetism And Magnetic Materials; 392; 2015; 11-5-2015; 63-67
dc.identifier.issn 0304-8853
dc.identifier.uri http://hdl.handle.net/11336/3488
dc.description.abstract We study the physical properties of the antiferromagnetic spin ladder CaV2O4 (CVO) and the Y-doped related compound Ca0.9Y0.1V2O4. In the latter, X-ray diffraction demonstrates the segregation of a small amount of a vanadium?perovskite impurity phase, leading to the formation of V vacancies within the main CVO-type structure. The 1D character of this calcium?vanadite enhances the influence of the va- cancies on the electric and magnetic properties of Ca0.9Y0.1V2O4. Electrical transport is characterized by a variable-range hopping mechanism determined by the charging energy of nm-sized segments of V chains delimited by V vacancies, i.e. a Coulomb gap is formed at the Fermi level. These vacancies also locally affect the magnetic correlations, breaking the long-range AFM order observed in CaV2O4 and producing exchange bias when the Y-doped sample is cooled with an applied magnetic field.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier Science
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject Spin ladders
dc.subject Variable range-hopping
dc.subject Disordered solids
dc.subject Defect-induced magnetic moments
dc.subject Exchange bias
dc.subject.classification Física de los Materiales Condensados
dc.subject.classification Ciencias Físicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Disorder effects in the S1⁄41 antiferromagnetic spin ladder CaV2O4
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-03-30 10:35:44.97925-03
dc.journal.volume 392
dc.journal.number 2015
dc.journal.pagination 63-67
dc.journal.pais Países Bajos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Guitarra, S.R.. Universidad San Francisco de Quito; Ecuador
dc.description.fil Fil: Caneiro, Alberto. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina
dc.description.fil Fil: Niebieskikwiat, D.. Universidad San Francisco de Quito; Ecuador
dc.journal.title Journal Of Magnetism And Magnetic Materials
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0304885315301372
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jmmm.2015.05.012


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)