Anomalous thermodynamics in a mixed spin-1/2 and spin-1 hexagonal nanowire system

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorPimenta, R. A.-
Autor(es): dc.creatorRojas, O.-
Autor(es): dc.creatorSouza, S. M. de-
Data de aceite: dc.date.accessioned2026-02-09T11:13:37Z-
Data de disponibilização: dc.date.available2026-02-09T11:13:37Z-
Data de envio: dc.date.issued2022-11-15-
Data de envio: dc.date.issued2022-11-15-
Data de envio: dc.date.issued2022-05-15-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/55504-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0304885322000488-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1136343-
Descrição: dc.descriptionThe mixed spin-1/2 Ising model and spin-1 Blume–Capel model in an hexagonal nanowire structure under the presence of crystal field is considered. The free energy is obtained through the transfer matrix technique, which is solved numerically. Our main result lies in the presence of pseudo-transition in low temperature region near the ferrimagnetic/ferromagnetic boundary, due to the influence of a crystal field. The evidence of a pseudo-transition is observed in several quantities. Free energy first derivative quantities like entropy and internal energy show an abrupt but continuous jump, whereas quantities associated with second derivatives of the free energy like the specific heat exhibit a strong sharp peak, quite similar to a second order phase transition. We also investigate magnetization patterns and do not find evidence of spontaneous magnetization. Nevertheless, assuming a small magnetic field, we can induce a magnetization which resembles a spontaneous magnetization at a pseudo-critical temperature.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Magnetism and Magnetic Materials-
Palavras-chave: dc.subjectHexagonal nanowire-
Palavras-chave: dc.subjectBlume-Capel-
Palavras-chave: dc.subjectIsing-
Palavras-chave: dc.subjectMixed-spin-
Palavras-chave: dc.subjectPseudo-transition-
Título: dc.titleAnomalous thermodynamics in a mixed spin-1/2 and spin-1 hexagonal nanowire system-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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