Large anomalous Nernst effect across the magneto-structural transition in a bulk Ni-Co-Mn-Sn full Heusler alloy

Large anomalous Nernst effect across the magneto-structural transition in a bulk Ni-Co-Mn-Sn full Heusler alloy

We report on the observation of a temperature and field dependent anomalous Nernst effect (ANE) in a Ni-rich bulk Ni-Co-Mn-Sn full Heusler alloy. A large change in the transverse Nernst coefficient (N) is obtained across the first order magneto-structural transition from a tetragonal martensite to a...

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Veröffentlicht in:Applied physics letters 2018-12, Vol.113 (26)
Hauptverfasser: Ghosh, Arup, De, Avirup, Nair, Sunil
Format: Artikel
Sprache:eng
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Applied physics
Heusler alloys
Magnetic anisotropy
Manganese
Martensite
Nernst-Ettingshausen effect
Nickel
Temperature dependence
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De, Avirup
Nair, Sunil
description We report on the observation of a temperature and field dependent anomalous Nernst effect (ANE) in a Ni-rich bulk Ni-Co-Mn-Sn full Heusler alloy. A large change in the transverse Nernst coefficient (N) is obtained across the first order magneto-structural transition from a tetragonal martensite to a cubic austenite phase. The saturation fields of both the ANE and the magnetization appear to depend largely on the magnetic anisotropy of the device. Such a change in the Nernst co-efficient may prove to be useful for switching applications controlled by temperature and magnetic field changes.
doi_str_mv 10.1063/1.5045262
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subjects Applied physics
Heusler alloys
Magnetic anisotropy
Manganese
Martensite
Nernst-Ettingshausen effect
Nickel
Temperature dependence
title Large anomalous Nernst effect across the magneto-structural transition in a bulk Ni-Co-Mn-Sn full Heusler alloy
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