Relaxation dynamics and growth modes of metastable spin-crossover materials with magnetic interactions

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AuteurOKE, DJIDJOHO TOUSSAINT
AuteurHONTINFINDE, FELIX
AuteurBOUKHEDDADEN, KAMEL
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2016
ResumeA two-dimensional spin-1 Blume-Emery-Griffiths (BEG) model is used to describe the relaxation dynamics of spin-crossover (SC) compounds with magnetic interactions from a metastable high-spin state by means of Monte Carlo simulations with Arrhenius dynamics. The model comprises temperature-dependent effective spin exchange interaction accounting for spin-phonon interactions. The growth modes of the stable low-spin state domains are singled out in the model parameters' space. For weak magnetic interactions, numerical results indicated a kind of 2D-nucleation with the birth, spread and coalescence of low-spin diamagnetic domains following the Becker-Doering law. A schematic growth phase diagram is presented.
DOI10.1016/j.cocom.2016.09.003
Autre identifiantBECDB-6786
URIhttps://dspace.uac.bj/handle/123456789/6147
Languefr
Fait partie deComputational Condensed Matter
SujetThermal hysteresis loops
SujetIsothermal Relaxation curves
SujetArrhenius dynamics
SujetSpin Transition
Sujet2D nucleation
TitreRelaxation dynamics and growth modes of metastable spin-crossover materials with magnetic interactions
TypeArticle

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