Anomalous Nernst effect in L10 type Mn-Ga alloy thin films

M. Mizuguchi, M. Inoue, S. Mizukami, K. Takanashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

L10 type MnGa alloy is attracting attention as materials to be applied to spintronic devices since they generally show large magnetic anisotropy, small saturation magnetization, and small Gilbert damping constant. It is known that an L10 type MnGa alloy thin film keeps large magnetic anisot-ropy with the increase of the Mn-composition even though saturation magnetization decreases[1]. Thus, it is interesting to investigate various magnetic properties of this alloy-system. On the other hand, 'spin-caloritronics', which deals with a relationship between spin current and heat current, is getting an attracting research field[2]. Previously, we studied a thermomagnetic phenomenon, that is, anomalous Nernst effect (ANE), of L10 type FePt alloy thin films, and evaluated anomalous Nernst coefficient and anomalous Nernst angle of the FePt thin film[3]. Besides, a new-type of thermopile device using ANE was proposed to show a potential of ANE-based thermoelectric applications[4]. In this paper, ANE of epitaxial Mnx-Ga1-x thin films with varied Mn-compositions (x) within the L10 composition range was systematically studied to explore their thermomagnetic characteristics. Moreover, anomalous Hall effects (AHE) of the films were investigated to understand the correlation of the two effects in L1 type Mn-Ga thin films.

Original languageEnglish
Title of host publication2015 IEEE International Magnetics Conference, INTERMAG 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479973224
DOIs
Publication statusPublished - 2015 Jul 14
Event2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China
Duration: 2015 May 112015 May 15

Publication series

Name2015 IEEE International Magnetics Conference, INTERMAG 2015

Other

Other2015 IEEE International Magnetics Conference, INTERMAG 2015
CountryChina
CityBeijing
Period15/5/1115/5/15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Surfaces, Coatings and Films

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