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  Pulsed high-magnetic-field experiments: New insights into the magnetocaloric effect in Ni-Mn-In Heusler alloys

Salazar Mejía, C., Ghorbani Zavareh, M., Nayak, A. K., Skourski, Y., Wosnitza, J., Felser, C., et al. (2015). Pulsed high-magnetic-field experiments: New insights into the magnetocaloric effect in Ni-Mn-In Heusler alloys. Journal of Applied Physics, 117(17): 17E710, pp. 1-4. doi:10.1063/1.4916556.

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Salazar Mejía, C.1, Autor           
Ghorbani Zavareh, M.2, Autor
Nayak, A. K.3, Autor           
Skourski, Y.2, Autor
Wosnitza, J.2, Autor
Felser, C.4, Autor           
Nicklas, M.5, Autor           
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2External Organizations, ou_persistent22              
3Ajaya Nayak, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863426              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
5Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              

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 Zusammenfassung: The present pulsed high-magnetic-field study on Ni 50Mn35In15 gives an extra insight into the thermodynamics of the martensitic transformation in Heusler shape-memory alloys. The transformation-entropy change, ΔS, was estimated from field-dependent magnetization experiments in pulsed high magnetic fields and by heat-capacity measurements in static fields. We found a decrease of ΔS with decreasing temperature. This behavior can be understood by considering the different signs of the lattice and magnetic contributions to the total entropy. Our results further imply that the magnetocaloric effect will decrease with decreasing temperature and, furthermore, the martensitic transition is not induced anymore by changing the temperature in high magnetic fields.

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Sprache(n): eng - English
 Datum: 2015-04-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1063/1.4916556
BibTex Citekey: :/content/aip/journal/jap/117/17/10.1063/1.4916556
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Titel: Journal of Applied Physics
  Kurztitel : J. Appl. Phys.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: New York, NY : AIP Publishing
Seiten: - Band / Heft: 117 (17) Artikelnummer: 17E710 Start- / Endseite: 1 - 4 Identifikator: ISSN: 0021-8979
CoNE: https://pure.mpg.de/cone/journals/resource/991042723401880