Kaeswurm, B. ; Barcza, A. ; Vögler, M. ; Geiger, P. T. ; Katter, M. ; Gutfleisch, O. ; Cohen, L. F. (2017)
Behaviour of the Young's modulus at the magnetocaloric transition in La(Fe,Co,Si)13.
In: Journal of Alloys and Compounds, 697
doi: 10.1016/j.jallcom.2016.11.360
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Magnetic solid state cooling applications require families of samples where the magnetic transition is cascaded across the working range of the fridge. Although magnetic properties are widely studied, information relating to the mechanical properties of such systems is less prevalent. Here we study the mechanical properties of a series of magnetocaloric La(Co,Fe,Si)13 samples where the Co content is varied to produce a range of transition temperatures. It was found that at room temperature the flexural strength decreases and the Young's modulus increases with increasing Co content. Interestingly we find a significant reduction of Young's modulus at temperature around the magnetic transition temperature. This reduction was less pronounced with increasing Co content. We associate the softening with the magnetovolume coupling known to exist in these materials.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Kaeswurm, B. ; Barcza, A. ; Vögler, M. ; Geiger, P. T. ; Katter, M. ; Gutfleisch, O. ; Cohen, L. F. |
| Art des Eintrags: | Bibliographie |
| Titel: | Behaviour of the Young's modulus at the magnetocaloric transition in La(Fe,Co,Si)13 |
| Sprache: | Englisch |
| Publikationsjahr: | 15 März 2017 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Alloys and Compounds |
| Jahrgang/Volume einer Zeitschrift: | 697 |
| DOI: | 10.1016/j.jallcom.2016.11.360 |
| Kurzbeschreibung (Abstract): | Magnetic solid state cooling applications require families of samples where the magnetic transition is cascaded across the working range of the fridge. Although magnetic properties are widely studied, information relating to the mechanical properties of such systems is less prevalent. Here we study the mechanical properties of a series of magnetocaloric La(Co,Fe,Si)13 samples where the Co content is varied to produce a range of transition temperatures. It was found that at room temperature the flexural strength decreases and the Young's modulus increases with increasing Co content. Interestingly we find a significant reduction of Young's modulus at temperature around the magnetic transition temperature. This reduction was less pronounced with increasing Co content. We associate the softening with the magnetovolume coupling known to exist in these materials. |
| Freie Schlagworte: | Magnetocaloric, Ferromagnetic, Phase Transition, La(Fe,Si)13, Lattice softening, Young's modulus |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Funktionale Materialien |
| Hinterlegungsdatum: | 17 Mär 2017 09:45 |
| Letzte Änderung: | 19 Jul 2018 13:56 |
| PPN: | |
| Sponsoren: | The research leading to these results has received funding from the European community's seventh framework programme FP 7/2007–2013 under grant agreement no 310748 (DRREAM). |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum