Gutfleisch, O. ; Gottschall, T. ; Fries, M. ; Benke, D. ; Radulov, I. ; Skokov, K. P. ; Wende, H. ; Gruner, M. ; Acet, M. ; Entel, P. ; Farle, M. (2016)
Mastering hysteresis in magnetocaloric materials.
In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 374 (2074)
doi: 10.1098/rsta.2015.0308
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Hysteresis is more than just an interesting oddity that occurs in materials with a first-order transition. It is a real obstacle on the path from existing laboratory-scale prototypes of magnetic refrigerators towards commercialization of this potentially disruptive cooling technology. Indeed, the reversibility of the magnetocaloric effect, being essential for magnetic heat pumps, strongly depends on the width of the thermal hysteresis and, therefore, it is necessary to understand the mechanisms causing hysteresis and to find solutions to minimize losses associated with thermal hysteresis in order to maximize the efficiency of magnetic cooling devices. In this work, we discuss the fundamental aspects that can contribute to thermal hysteresis and the strategies that we are developing to at least partially overcome the hysteresis problem in some selected classes of magnetocaloric materials with large application potential. In doing so, we refer to the most relevant classes of magnetic refrigerants La–Fe–Si-, Heusler- and Fe2P-type compounds.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Gutfleisch, O. ; Gottschall, T. ; Fries, M. ; Benke, D. ; Radulov, I. ; Skokov, K. P. ; Wende, H. ; Gruner, M. ; Acet, M. ; Entel, P. ; Farle, M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Mastering hysteresis in magnetocaloric materials |
| Sprache: | Englisch |
| Publikationsjahr: | 11 Juli 2016 |
| Verlag: | The Royal Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
| Jahrgang/Volume einer Zeitschrift: | 374 |
| (Heft-)Nummer: | 2074 |
| DOI: | 10.1098/rsta.2015.0308 |
| Kurzbeschreibung (Abstract): | Hysteresis is more than just an interesting oddity that occurs in materials with a first-order transition. It is a real obstacle on the path from existing laboratory-scale prototypes of magnetic refrigerators towards commercialization of this potentially disruptive cooling technology. Indeed, the reversibility of the magnetocaloric effect, being essential for magnetic heat pumps, strongly depends on the width of the thermal hysteresis and, therefore, it is necessary to understand the mechanisms causing hysteresis and to find solutions to minimize losses associated with thermal hysteresis in order to maximize the efficiency of magnetic cooling devices. In this work, we discuss the fundamental aspects that can contribute to thermal hysteresis and the strategies that we are developing to at least partially overcome the hysteresis problem in some selected classes of magnetocaloric materials with large application potential. In doing so, we refer to the most relevant classes of magnetic refrigerants La–Fe–Si-, Heusler- and Fe2P-type compounds. |
| Freie Schlagworte: | hysteresis, magnetocalorics, magnetostructural transition |
| Zusätzliche Informationen: | This article is part of the themed issue ‘Taking the temperature of phase transitions in cool materials’. |
| 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: | 24 Okt 2016 07:53 |
| Letzte Änderung: | 24 Okt 2016 07:53 |
| PPN: | |
| Sponsoren: | This work has been, in part, funded by the European Community’s 7th Framework Programme under grant agreement no. 310748 ‘DRREAM’ and also the DFG SPP 1599 priority programme., We also want to thank the DFG for financial support in the framework of the Excellence Initiative, Darmstadt Graduate School of Excellence Energy Science and Engineering (GSC 1070). |
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