Temperature dependence of anisotropic magneto-Seebeck effect in NiPt alloys

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.

Automated summary

This study systematically measured the anisotropic magneto-Seebeck effect (AMSE) of ferromagnetic Ni100-x Pt x alloys with different Pt concentration ratios. The AMSE of the alloys reaches its maximum value around x = 5 at% in the high temperature range and disappears at temperatures lower than the Curie temperature. The systematic dataset and experimental techniques established in this study will boost spin caloritronics research.