Mean-Field and Monte Carlo calculations of phase transitions in a core–shell Ising nanotube

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AuteurKARIMOU, MOUNIROU
AuteurOKE, DJIDJOHO TOUSSAINT
AuteurHONTINFINDE, SENAN IDA VALERIE
AuteurKPLE, JOEL
AuteurHONTINFINDE, FELIX
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2023
ResumeA cylindrical Ising nanotube that consists of 3/2 core spins surrounded by 5/2 shell spins is introduced and studied with Mean-Field approximation and Monte Carlo simulations in the presence of crystal and external magnetic fields. The effects of positive and negative interfacial coupling constants on the magnetic properties have been examined. The thermal behaviors of the order parameters and different types of macroscopic instabilities are presented. The model exhibits compensation points, first- and second-order phase transitions. Richer magnetic properties are obtained in the antiferromagnetic core-shell coupling case. In the presence of ferromagnetic interfacial coupling, the simulations sometimes generated long-lived metastable states. These states jumped to stable thermodynamic ones under thermal fluctuations via first-order phase transitions.
DOI10.1016/j.physb.2023.415107
Autre identifiantBECDB-13475
URIhttps://dspace.uac.bj/handle/123456789/11539
Languefr
Fait partie dePhysica B: Condensed Matter
SujetIsing nanotube
Sujetcore-shell structure
Sujetmean-field theory
SujetMonte Carlo method
Sujetmagnetic field
SujetPhase transitions
SujetMagnetic hysteresis
TitreMean-Field and Monte Carlo calculations of phase transitions in a core–shell Ising nanotube
TypeArticle

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