Temperature dependence of anisotropic magneto-Seebeck effect in NiPt alloys. (7th June 2021)

• Record Type: Journal Article
• Authors: Hirai, Takamasa; Modak, Rajkumar; Miura, Asuka; Seki, Takeshi; Takanashi, Koki; Uchida, Ken-ichi
• Is Part Of: Applied physics express. Volume 14:Number 7(2021)
• Publication Date: 2021-06-07
• Subjects: Thermoelectric -- Anisotropic magneto-Seebeck effect -- Magneto-thermoelectric -- Ferromagnet -- Spincaloritronics; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/ac057c
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: This letter reports systematic measurements of the anisotropic magneto-Seebeck effect (AMSE) of ferromagnetic Ni100− x Pt x alloys with different Pt concentration ratios x . By simultaneously measuring an applied temperature difference and generated thermopower at the same positions, the Seebeck coefficient under a magnetic field is quantified with high reliability at the temperatures ranging from 300 to 550 K. The AMSE of the alloys is maximized at around x = 5 at% in the high temperature range and disappears at the temperatures lower than the Curie temperature. The systematic dataset and experimental techniques established here will invigorate spin caloritronics studies.