Process gas dependence of the spin Peltier effect in Pt/Fe3O4hybrid structures

Takuma Itoh, Asuka Miura, Ken Ichi Uchida, Hideto Yanagihara

Research output: Contribution to journalArticlepeer-review


The spin Peltier effect (SPE) in Pt/Fe3O4 hybrid structures with epitaxial Fe3O4 layers synthesized by reactive sputtering using two different process gases, Ar/O2 and Kr/O2, was investigated. The magnitude of the SPE-induced temperature modulation for the Fe3O4 film grown using Kr/O2 was approximately 40% larger than that grown using Ar/O2 despite almost the same crystalline structures and magnetic and electric properties of the films. The enhancement of the SPE signal for the film grown with Kr/O2 can be attributed to an increase in the spin current injected into the Fe3O4 film owing to its large roughness.

Original languageEnglish
Article number013004
JournalApplied Physics Express
Issue number1
Publication statusPublished - 2022 Jan

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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