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

Athorn Vora-ud*, Poramed Wongjom, Somporn Thaowonkaew, Piyawat Piyasin, Chanunthorn Chananonnawathorn, Kunchit Singsoog, Melania Suweni Muntini, Mati Horprathum, Supree Pinitsoontorn, Tosawat Seetawan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Amorphous Fe-Ti-Sb (FTS) thin film was prepared on a 0.3-µm SiO2/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 (Ss) of around 0.35 µV K− 1.

Original languageEnglish
Pages (from-to)989-993
Number of pages5
JournalJournal of Electronic Materials
Volume52
Issue number2
DOIs
Publication statusPublished - Feb 2023

Keywords

  • Amorphous Fe-Ti-Sb thin films
  • anomalous Nernst effect
  • magnetron sputtering
  • spin Seebeck effect

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