Spintronic Thermoelectric Properties of Amorphous Fe-Ti-Sb Thin Films

• Published in: Journal of electronic materials 2023-02, Vol.52 (2), p.989-993
• Main Authors: Vora-ud, Athorn, Wongjom, Poramed, Thaowonkaew, Somporn, Piyasin, Piyawat, Chananonnawathorn, Chanunthorn, Singsoog, Kunchit, Muntini, Melania Suweni, Horprathum, Mati, Pinitsoontorn, Supree, Seetawan, Tosawat
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Crystal structure; Electromagnetism; Electronics and Microelectronics; Heat; Instrumentation; Investigations; Iron; Magnetic measurement; Magnetic properties; Magnetron sputtering; Materials Science; Morphology; Nernst-Ettingshausen effect; Optical and Electronic Materials; Original Research Article; Physics; R&D; Research & development; Scanning electron microscopy; Seebeck effect; Silicon dioxide; Solid State Physics; Spectrum analysis; Thermoelectricity; Thin films; Titanium
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-022-10107-w

Amorphous Fe-Ti-Sb (FTS) thin film was prepared on a 0.3-µm SiO 2 /Si wafer by a DC magnetron sputtering method to investigate the spintronic thermoelectric (STE) properties based on the anomalous Nernst effect (ANE) and spin Seebeck effect (SSE). A platinum (Pt) ultra-thin layer was coated on top FTS (Pt/FTS) thin film surface to be used for the spin Hall detector. The crystal structure, morphology, composition and magnetic characteristics of as-deposited FTS and Pt/FTS thin films were carried out by x-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDS), and vibrating sample magnetometry (VSM), respectively. As a result, the crystal structure and morphology displayed a metallic-glass type within the amorphous phase and a smooth surface. The magnetic characterization showed that an ANE and SSE of FTS thin film to yield a spin Seebeck coefficient ( S s ) of around 0.35 µV K − 1 .