Anomalous nernst effect in L10-FePt/MnGa thermopiles for new thermoelectric applications

Yuya Sakuraba, Kota Hasegawa, Masaki Mizuguchi, Takahide Kubota, Shigemi Mizukami, Terunobu Miyazaki, Koki Takanashi

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

We propose a new-type of thermopile consisting of two ferromagnetic materials with anomalous Nernst effects (ANEs) of opposite signs. L1 0-FePt and L10-MnGa have been chosen as the materials because they show large ANEs with opposite signs. The combination of perpendicularly magnetized FePt and MnGa wires enhances the ANE voltage effectively. The ANE in in-plane magnetized FePt films induced by applying a perpendicular temperature difference shows no variation against the film thickness, which is a promising characteristic for thermoelectric applications because the internal resistance of the thermopile, which determines the extractable electric power, can be reduced by increasing the thickness of ferromagnetic wires.

Original languageEnglish
Article number033003
JournalApplied Physics Express
Volume6
Issue number3
DOIs
Publication statusPublished - 2013 Mar

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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