Anomalous Nernst effect in disordered FePtPd ternary alloy films

L. Ma; Y. Zhang; H. Zhao; M. Tang; H. L. Yang; Z. Shi; N. Tian; C. Y. You

doi:10.1063/1.5049416

AIP Advances (Jul 2019)

Anomalous Nernst effect in disordered FePtPd ternary alloy films

L. Ma,
Y. Zhang,
H. Zhao,
M. Tang,
H. L. Yang,
Z. Shi,
N. Tian,
C. Y. You

Affiliations

L. Ma: School of Materials Science & Engineering, Xi’an University of Technology, Xi’an 710048, China
Y. Zhang: School of Materials Science & Engineering, Xi’an University of Technology, Xi’an 710048, China
H. Zhao: School of Materials Science & Engineering, Xi’an University of Technology, Xi’an 710048, China
M. Tang: Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology and Pohl Institute of Solid State Physics and School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
H. L. Yang: Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology and Pohl Institute of Solid State Physics and School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
Z. Shi: Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology and Pohl Institute of Solid State Physics and School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
N. Tian: School of Materials Science & Engineering, Xi’an University of Technology, Xi’an 710048, China
C. Y. You: School of Materials Science & Engineering, Xi’an University of Technology, Xi’an 710048, China

DOI: https://doi.org/10.1063/1.5049416
Journal volume & issue: Vol. 9, no. 7
pp. 075014 – 075014-4

Abstract

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The anomalous Nernst effect (ANE) in disordered Fe0.5(PtxPd1-x)0.5 alloy films is investigated at room temperature. The spin orbit coupling (SOC) strength is continuously tuned by changing the composition of Pt and Pd in Fe0.5(PtxPd1-x)0.5 alloy films. It was found that the ANE voltage VANE increases with the increase of Pt composition. Meanwhile, the νN factor, which indirectly represents the anomalous Nernst efficiency, also increases with raising the composition of Pt. The enhancement of VANE and νN at larger x can be attributed to the increasing of SOC strength, which mainly comes from heavy Pt atoms. The present results will facilitate the theoretical studies of ANE and provide means of manipulating ANE for technological application.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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