The crystallisation kinetics, magnetic and magnetocaloric properties of Gd55Co20Fe5Al20 - xSix (x=0, 5, 10, 15) alloys

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dc.authoridKolat, Veli Serkan/0000-0002-8864-5051
dc.authoridGençer, Hüseyin/0000-0002-2292-0751
dc.authoridBayri, Nevzat/0000-0001-7105-7707
dc.authoridKaya, Ali Onur/0000-0003-4220-1866;
dc.authorwosidKolat, Veli Serkan/ABI-5280-2020
dc.authorwosidGençer, Hüseyin/ABG-9104-2020
dc.authorwosidBayri, Nevzat/ABG-9663-2020
dc.authorwosidIzgi, tekin/ABH-5655-2020
dc.authorwosidKaya, Ali Onur/CAF-1175-2022
dc.authorwosidAtalay, Selcuk/AAA-5095-2021
dc.contributor.authorGencer, H.
dc.contributor.authorIzgi, T.
dc.contributor.authorKolat, V. S.
dc.contributor.authorBayri, N.
dc.contributor.authorKaya, A. O.
dc.contributor.authorAtalay, S.
dc.date.accessioned2024-08-04T20:37:51Z
dc.date.available2024-08-04T20:37:51Z
dc.date.issued2013
dc.departmentİnönü Üniversitesien_US
dc.description.abstractThe effects of substituting Si for Al on the crystallisation kinetics and magnetic and magnetocaloric properties of Gd55Co20Fe5Al20 Si-- x(x) (x = 0, 5, 10, 15) alloys have been investigated in detail. The broad diffraction peaks in the XRD patterns indicated that all the samples have amorphous structures. The activation energies of the alloys were calculated using the Kissinger, Ozawa and Augis-Bennett models based on differential thermal analysis data. The Avrami exponent n was calculated from the Johnson-Mehl-Avrami equation. The increase in the activation energy as the Si content increased to x = 10 indicated that the addition of Si improves the thermal stability and slows the crystallisation kinetics of the samples. The value of the Avrami exponent showed that the nucleation and growth mechanisms of the crystallisation process depend on the Si concentration. The maximum entropy change reached a maximum value of 6.82 J/kg K for x = 5 and then decreased with further increases of Si. The refrigeration capacities are 558, 665,700 and 519 J/kg for x = 0, 5, 10 and 15, respectively. The increased thermal stabilities and large refrigeration capacities make these amorphous alloys attractive candidates for magnetic refrigeration applications. (C) 2013 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipInonu University Research Fund [2012/37]en_US
dc.description.sponsorshipThis work was supported by Inonu University Research Fund with the project number 2012/37.en_US
dc.identifier.doi10.1016/j.jnoncrysol.2013.08.009
dc.identifier.endpage191en_US
dc.identifier.issn0022-3093
dc.identifier.issn1873-4812
dc.identifier.scopus2-s2.0-84883857448en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage185en_US
dc.identifier.urihttps://doi.org/10.1016/j.jnoncrysol.2013.08.009
dc.identifier.urihttps://hdl.handle.net/11616/96201
dc.identifier.volume379en_US
dc.identifier.wosWOS:000327574600027en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofJournal of Non-Crystalline Solidsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAmorphous alloysen_US
dc.subjectCrystallisation kineticsen_US
dc.subjectMagnetocaloric effecten_US
dc.titleThe crystallisation kinetics, magnetic and magnetocaloric properties of Gd55Co20Fe5Al20 - xSix (x=0, 5, 10, 15) alloysen_US
dc.typeArticleen_US

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