Nonequivalent Antiferromagnetically Coupled Sublattices Induce Two-Step Spin-Crossover Transitions: Equilibrium and Nonequilibrium Aspects

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dc.contributor.authorVeliu, Valon
dc.contributor.authorYalcin, Orhan
dc.contributor.authorOzum, Songul
dc.contributor.authorErdem, Riza
dc.date.accessioned2024-11-07T13:34:04Z
dc.date.available2024-11-07T13:34:04Z
dc.date.issued2024
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractAs a continuation to the previously published work (Yal & ccedil;& imath;n et al. (2022)), we investigate the equilibrium and nonequilibrium properties of the spin-crossover systems, with a specific focus on the nonequivalent sublattice, and compare these properties with those of the equivalent sublattices. We used the lowest approximation of the cluster variation method (LACVM) to derive the static equations for the order parameters of the two sublattices and determine high-spin fraction in relation to temperature and external magnetic field in a spin-crossover system. At a low temperature, the transition from stable high-spin (HS) state where nHS=1 occurs in the plateau region, where nHS=0.5 for nonequivalent sublattices. The order parameters for non-equivalent sublattices exhibit different states at the transition temperature. Also, we study the nonequilibrium properties of the order parameters and high-spin fraction using the path probability method (PPM). With the current model, we obtain and analyze the relaxation curves for the order parameters Sa, Sb, and high-spin fraction. These curves demonstrate the existence of bistability at low temperatures. At the end of this study, we present the flow diagram that shows the order parameters for different temperature values. The diagram exhibits states that are stable, metastable, and unstable.
dc.identifier.doi10.3390/magnetochemistry10060042
dc.identifier.issn2312-7481
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85196893571
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.3390/magnetochemistry10060042
dc.identifier.urihttps://hdl.handle.net/11480/15773
dc.identifier.volume10
dc.identifier.wosWOS:001255804100001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMdpi
dc.relation.ispartofMagnetochemistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241106
dc.subjectnonequivalent sublattice
dc.subjectspin-crossover system
dc.subjecttwo-sublattice
dc.subjectequilibrium and nonequilibrium properties
dc.titleNonequivalent Antiferromagnetically Coupled Sublattices Induce Two-Step Spin-Crossover Transitions: Equilibrium and Nonequilibrium Aspects
dc.typeArticle

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