Skokov, Konstantin P. ; Pastushenkov, Yury G. ; Nikitin, Sergey A. ; Fries, Maximilian ; Gutfleisch, Oliver (2016)
Rotational Magnetocaloric Effect in the Er2Fe14B Single Crystal.
In: IEEE Transactions on Magnetics, 52 (5)
doi: 10.1109/TMAG.2016.2530138
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The adiabatic temperature change ΔTad and the isothermal entropy change ΔSm were measured in a Er2Fe14B single crystal in the temperature range of 250-370 K under a magnetic field change of Δμ0H = 1.9 T. The magnetic field was applied along the crystallographic axes a and c. Under adiabatic conditions, the application of a 0.5 T field along the c-direction of the Er2Fe14B single crystal leads to a negative ΔTad at temperatures below the spin-reorientation temperature TSR = 323 K. In this case, the maximum ΔTad reaches -0.9 K in the temperature range of 270-280 K. Along the a-direction, the magnetocaloric effect above TSR is positive, and ΔTad reaches 0.68 K in the magnetic field 0.5 T at the temperatures of 320-330 K. Under isothermal conditions, the maximal magnetic entropy change is -0.86 J kg-1K-1 at 328 K when the magnetic field is applied along the a-direction and ΔSm = 1.27 J kg-1K-1 at 275 K if the single crystal is magnetized along the c-axis.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Skokov, Konstantin P. ; Pastushenkov, Yury G. ; Nikitin, Sergey A. ; Fries, Maximilian ; Gutfleisch, Oliver |
| Art des Eintrags: | Bibliographie |
| Titel: | Rotational Magnetocaloric Effect in the Er2Fe14B Single Crystal |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2016 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | IEEE Transactions on Magnetics |
| Jahrgang/Volume einer Zeitschrift: | 52 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1109/TMAG.2016.2530138 |
| Kurzbeschreibung (Abstract): | The adiabatic temperature change ΔTad and the isothermal entropy change ΔSm were measured in a Er2Fe14B single crystal in the temperature range of 250-370 K under a magnetic field change of Δμ0H = 1.9 T. The magnetic field was applied along the crystallographic axes a and c. Under adiabatic conditions, the application of a 0.5 T field along the c-direction of the Er2Fe14B single crystal leads to a negative ΔTad at temperatures below the spin-reorientation temperature TSR = 323 K. In this case, the maximum ΔTad reaches -0.9 K in the temperature range of 270-280 K. Along the a-direction, the magnetocaloric effect above TSR is positive, and ΔTad reaches 0.68 K in the magnetic field 0.5 T at the temperatures of 320-330 K. Under isothermal conditions, the maximal magnetic entropy change is -0.86 J kg-1K-1 at 328 K when the magnetic field is applied along the a-direction and ΔSm = 1.27 J kg-1K-1 at 275 K if the single crystal is magnetized along the c-axis. |
| Freie Schlagworte: | Magnetic anisotropy, Magnetic refrigeration, Magnetocaloric materials, Spin-reorientation transition, magnetic refrigeration, magnetocaloric materials, spin-reorientation transition (SRT) |
| 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: | 11 Mai 2016 13:10 |
| Letzte Änderung: | 11 Mai 2016 13:10 |
| PPN: | |
| Sponsoren: | The work of K. P. Skokov was supported by the Russian Science Foundation under Grant 15-12-10008., The work of Y. G. Pastushenkov was supported by the Ministry of Education and Science of the Russian Federation under Grant 1598., The work of M. Fries was supported by the European Com- munity’s Seventhh Framework Programme (FP7/2007-2013) through the DRREAM under Grant 310748. |
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