Phase diagrams and critical behaviours of the mixed spin-5/2 and spin-7/2 Ising system

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AuteurYESSOUFOU, RACHIDI ADENIYI AKAMBI
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2019
ResumeWe used mean-field theory based on the Bogoliubov inequality for the Gibbs free energy to examine the mag- netic properties of a mixed spin-5/2 and spin-7/2 Blume-Capel ferrimagnetic system. The thermal behaviours of the system magnetization are classified according to the extended Néel nomenclature. The system exhibits compensation phenomena where a complete cancellation of sublattice magnetizations is observed below the critical temperature. Temperature-dependent phase diagrams are constructed for the case of unequal sublat- tice crystal field interactions. Under appropriate conditions, our calculations reveal first-order transitions in addition to second-order ones previously observed in Monte Carlo simulations.
DOI10.5488/CMP.22.33601
Autre identifiantBECDB-7971
URIhttps://dspace.uac.bj/handle/123456789/7164
Languefr
Fait partie deCondensed Matter Physics
Sujetmean-field theory
Sujetmixed-spin system
Sujetmagnetization
Sujetcompensation temperature
SujetPhase transitions
TitrePhase diagrams and critical behaviours of the mixed spin-5/2 and spin-7/2 Ising system
TypeArticle

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