Krautz, Maria ; Skokov, Konstantin ; Gottschall, Tino ; Teixeira, Cristiano S. ; Waske, Anja ; Liu, Jian ; Schultz, Ludwig ; Gutfleisch, Oliver (2014)
Systematic investigation of Mn substituted La(Fe,Si)13 alloys and their hydrides for room-temperature magnetocaloric application.
In: Journal of Alloys and Compounds, 598
doi: 10.1016/j.jallcom.2014.02.015
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Fully hydrogenated Mn containing LaFeSi alloys provide long time stability of attractive magnetocaloric properties; issues of previously reported induced phase co-existence can be avoided. In this paper, two series LaFe11.8−xSi1.2Mnx and LaFe11.6−xSi1.4Mnx (x = 0, 0.1, 0.2, 0.3, 0.4), before and after hydrogenation are presented. In the non-hydrogenated parent samples, microstructural evolution and phase formation with increasing Mn content are studied. It is found that materials combination within the sample series can provide constant MCE over a large working temperature range. As a peculiarity, the hydrogenated compounds show a different dependence of the transition temperature as a function of Si content than the parent compounds. This behaviour is explained by comparing the amount of hydrogen incorporated in samples with different Si content. Moreover, an estimation for the maximum adiabatic temperature change and optimal magnetic field is given exemplarily for a non-hydrogenated and a hydrogenated compound.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Krautz, Maria ; Skokov, Konstantin ; Gottschall, Tino ; Teixeira, Cristiano S. ; Waske, Anja ; Liu, Jian ; Schultz, Ludwig ; Gutfleisch, Oliver |
| Art des Eintrags: | Bibliographie |
| Titel: | Systematic investigation of Mn substituted La(Fe,Si)13 alloys and their hydrides for room-temperature magnetocaloric application |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Juni 2014 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Alloys and Compounds |
| Jahrgang/Volume einer Zeitschrift: | 598 |
| DOI: | 10.1016/j.jallcom.2014.02.015 |
| Kurzbeschreibung (Abstract): | Fully hydrogenated Mn containing LaFeSi alloys provide long time stability of attractive magnetocaloric properties; issues of previously reported induced phase co-existence can be avoided. In this paper, two series LaFe11.8−xSi1.2Mnx and LaFe11.6−xSi1.4Mnx (x = 0, 0.1, 0.2, 0.3, 0.4), before and after hydrogenation are presented. In the non-hydrogenated parent samples, microstructural evolution and phase formation with increasing Mn content are studied. It is found that materials combination within the sample series can provide constant MCE over a large working temperature range. As a peculiarity, the hydrogenated compounds show a different dependence of the transition temperature as a function of Si content than the parent compounds. This behaviour is explained by comparing the amount of hydrogen incorporated in samples with different Si content. Moreover, an estimation for the maximum adiabatic temperature change and optimal magnetic field is given exemplarily for a non-hydrogenated and a hydrogenated compound. |
| Freie Schlagworte: | Magnetocaloric, Transition metal, Interstitial alloys, Hydrogen absorption, Magnetic refrigeration |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Funktionale Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 31 Mär 2014 08:15 |
| Letzte Änderung: | 31 Mär 2014 08:15 |
| PPN: | |
| Sponsoren: | Funding by BMBF within the VIP Program “Neuartige magnetokalorische Maschine für Kühl – und Heizanwendungen“ is gratefully acknowledged. |
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