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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
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Exchange Bias
dc.subject.classification
Física de los Materiales Condensados
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Ciencias Físicas
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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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