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Theoretical study of magnetic and magnetocaloric properties and MCE modeling by the mean-field theory in CoFeCuO4 spinel ferrite

2022Journal article Restricted access
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dc.contributor.authorNasri, M.
dc.contributor.authorHenchiri, C.
dc.contributor.authorDhahri, R.
dc.contributor.authorDhahri, E.
dc.contributor.authorOmari, L.H.
dc.contributor.authorMariano, José
dc.date.accessioned2022-07-20T08:41:22Z
dc.date.available2022-07-20T08:41:22Z
dc.date.issued2022
dc.description.abstractIn this research paper, we are basically interested in the theoretical investigation of magnetic and magnetocaloric properties of CoFeCuO4 spinel ferrite. Our sample was prepared using the sol-gel method. The XRD analysis confirmed the cubic spinel structure with the Fd (3) over barm space group exhibited by our compound. Furthermore, the positive slope detected in the Arrott plots is indicative of the second-order phase transition. Based on the phenomenological model of Hamad, the simulation of the magnetization M (T) goes in good agreement with the experimental results. Moreover, the magnetic entropy change (-Delta S-M) estimations by Hamad's model and Landau theory go in good accordance with the experimental results determined using Maxwell relations above the Curie-temperature T-C, and they show a divergence below this temperature. The relative cooling power (RCP) has a value of 64.342 J.kg(-1) under a magnetic field of 5T, which is suggestive that our compound can be a promising material for the magnetic refrigeration (MR) application. Finally, the validity of the mean-field theory to the theoretical study was proven through the compatibility inferred between the (-Delta S-M(max)) and RCP values obtained by the Maxwell relation and the Bean-Rodbell model.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.inoche.2021.109103pt_PT
dc.identifier.eissn1879-0259
dc.identifier.urihttp://hdl.handle.net/10400.1/18040
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectSpinel ferritept_PT
dc.subjectMagnetocaloric propertiespt_PT
dc.subjectHamad's modelpt_PT
dc.subjectLandau theorypt_PT
dc.subjectMean-field theorypt_PT
dc.titleTheoretical study of magnetic and magnetocaloric properties and MCE modeling by the mean-field theory in CoFeCuO4 spinel ferritept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage109103pt_PT
oaire.citation.titleInorganic Chemistry Communicationspt_PT
oaire.citation.volume135pt_PT
person.familyNameMariano
person.givenNameJosé
person.identifier.ciencia-idDE19-7D9D-00D0
person.identifier.orcid0000-0002-8480-617X
person.identifier.ridO-5252-2018
person.identifier.scopus-author-id12647832000
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication16ee0cfc-3dd4-40fa-8401-b435aa41ef7d
relation.isAuthorOfPublication.latestForDiscovery16ee0cfc-3dd4-40fa-8401-b435aa41ef7d

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