Magnetocaloric effect linked to the martensitic transformation in sputter-deposited Ni-Mn-Ga thin films

V. Recarte, J. I. Ṕrez-Landazábal, V. Sánchez-Alárcos, V. A. Chernenko, M. Ohtsuka

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

In this letter, the analysis of the magnetocaloric effect (MCE) in a thin film of Ni-Mn-Ga alloy sputter deposited on alumina substrate is reported. This film has 0.4 μm thickness and exhibits merged martensitic and ferromagnetic transitions. The temperature dependence of the dc magnetization under different constant applied magnetic fields has been measured. The calculated MCE effect under applied magnetic fields up to 60 kOe shows the feasibility of these materials to be implemented in refrigeration system for functional microsystems. In addition, the shift of the martensitic transformation temperature, as a function of the applied magnetic field, has been determined.

Original languageEnglish
Article number141908
JournalApplied Physics Letters
Volume95
Issue number14
DOIs
Publication statusPublished - 2009 Oct 19

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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