Mostrar registro simples

dc.contributor.authorSarvezuk, Paulo Willian Carvalhopt_BR
dc.contributor.authorGusmao, Miguel Angelo Cavalheiropt_BR
dc.contributor.authorCunha, Joao Batista Marimon dapt_BR
dc.contributor.authorIsnard, Olivierpt_BR
dc.date.accessioned2014-10-15T02:12:28Zpt_BR
dc.date.issued2012pt_BR
dc.identifier.issn1098-0121pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/104548pt_BR
dc.description.abstractPhysical properties of the NixFe1−xNb2O6 compounds are investigated combining x-ray and neutron powder diffraction with magnetic and calorimetry measurements as well as 57Fe Mössbauer spectroscopy. This system is known to present quasi-one-dimensional magnetism with the magnetic moments arranged along weakly interacting Ising chains. Partial substitution of the magnetic ion tends to suppress the magnetic ordering observed in the end members of the series. When this happens, the low-temperature magnetic specific heat agrees well with what is expected for isolated Ising chains. The lowest temperature powder neutron-diffraction patterns exhibit evidence for the occurrence of short-range order, and analysis of these diffuse neutron-scattering patterns allow us to obtain information on the magnetic correlations. The suppression of magnetism is consistently interpreted as resulting from the magnetic-cation disorder induced by substitution, which enhances the system’s tendency for frustration of geometrical origin.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 86, no. 5 (Aug. 2012), 054435, 9 p.pt_BR
dc.rightsOpen Accessen
dc.subjectMomentos magnéticospt_BR
dc.subjectEfeito mossbauerpt_BR
dc.subjectCalorimetriapt_BR
dc.subjectDifração de nêutronspt_BR
dc.subjectCalor especificopt_BR
dc.subjectCompostos de ferropt_BR
dc.subjectCompostos de níquelpt_BR
dc.titleMagnetic behavior of the NixFe1−xNb2O6 quasi-one-dimensional system : isolation of Ising chains by frustrationpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000868628pt_BR
dc.type.originEstrangeiropt_BR


Thumbnail
   

Este item está licenciado na Creative Commons License

Mostrar registro simples