Work

Thermal spin transport phenomena and their correlation to magnetic properties of metallic Pt/Co 1-x Fe x and Pt/Ni 1-x Fe x bilayers

Year: 2025

Type: article

Abstract: We investigate the thermal spin transport phenomena in ferromagnetic metals with an adjacent spin-polarized Pt layer examining sputter-deposited Pt/Co 1−x Fe x and Pt/Ni 1−x Fe x bilayers. We quantitatively disentangle the detected voltages generated by the spin Seebeck effect from the anomalous Nernst effect contributions arising from both the ferromagnetic metal and the spin-polarized Pt layer. Further, we probe the dependence of the aforementioned effects on the composition and on the magnetic moments of both the ferromagnetic metal and the spin-polarized Pt layer. We report a strong dependence of all effects on the composition via increase/decrease of the effect coefficients with increasing/decreasing magnetic moments of both the ferromagnetic metal and the spin-polarized Pt layer. Following our descriptions, our work provides quantitative spin Seebeck coefficients in metals and thermal spin transport coefficients in nominally non-magnetic materials such as Pt which will be the base for future designs of spin caloritronic applications.

Source: Science and Technology of Advanced Materials

DOI: 10.1080/14686996.2025.2587389

Authors: Panagiota Bougiatioti, Orestis Manos, Günter Reiss, Timo Kuschel

Institutions: Bielefeld University, Johannes Gutenberg University Mainz

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,134

Funder: Deutsche Forschungsgemeinschaft