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Direct measurement of the magnetocaloric effect in cementite

Kaeswurm, B. ; Friemert, K. ; Gürsoy, M. ; Skokov, K. P. ; Gutfleisch, O. (2016)
Direct measurement of the magnetocaloric effect in cementite.
In: Journal of Magnetism and Magnetic Materials, 410
doi: 10.1016/j.jmmm.2016.02.080
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Measurements of the magnetocaloric effect of cementite at its Curie temperature of 475 K are presented. An adiabatic temperature change of 1.76 +/- 0.01 K was measured using a direct measurement technique. The isothermal entropy change was determined from measurements of magnetisation isotherms and was shown to be 3.07 J K-1 kg(-1) in a field change of 2 T. The field dependencies of both magnetocaloric properties follow the H-2/3 dependence typical for ferromagnetic materials with a second order phase transition. The material may be of interest in magnetocaloric applications such as magnetic refrigeration or thermomagnetic power generation. (C) 2016 Elsevier B.V. All rights reserved.

Typ des Eintrags: Artikel
Erschienen: 2016
Autor(en): Kaeswurm, B. ; Friemert, K. ; Gürsoy, M. ; Skokov, K. P. ; Gutfleisch, O.
Art des Eintrags: Bibliographie
Titel: Direct measurement of the magnetocaloric effect in cementite
Sprache: Englisch
Publikationsjahr: 15 Juli 2016
Verlag: ELSEVIER SCIENCE BV
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Magnetism and Magnetic Materials
Jahrgang/Volume einer Zeitschrift: 410
DOI: 10.1016/j.jmmm.2016.02.080
Kurzbeschreibung (Abstract):

Measurements of the magnetocaloric effect of cementite at its Curie temperature of 475 K are presented. An adiabatic temperature change of 1.76 +/- 0.01 K was measured using a direct measurement technique. The isothermal entropy change was determined from measurements of magnetisation isotherms and was shown to be 3.07 J K-1 kg(-1) in a field change of 2 T. The field dependencies of both magnetocaloric properties follow the H-2/3 dependence typical for ferromagnetic materials with a second order phase transition. The material may be of interest in magnetocaloric applications such as magnetic refrigeration or thermomagnetic power generation. (C) 2016 Elsevier B.V. All rights reserved.

Freie Schlagworte: Magnetocaloric effect, Second order phase transition, Ferromagnetism, Cementite, Cohenite
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Funktionale Materialien
07 Fachbereich Chemie
07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie
07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie
Hinterlegungsdatum: 11 Mai 2016 13:03
Letzte Änderung: 31 Jan 2019 15:14
PPN:
Sponsoren: M.G. received funding from Deutsche Forschungsgemeinschaft (Darmstadt graduate school of energy science and engineering, GSC 1070)., The research leading to these results has received funding from the European community's seventh framework programme FP7/2007-2013 under grant agreement no. 310748 (DRREAM).
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