The 70th JSAP Spring Meeting 2023

Presentation information

Oral presentation

6 Thin Films and Surfaces » 6.3 Oxide electronics

[15p-A409-1~11] 6.3 Oxide electronics

Wed. Mar 15, 2023 1:00 PM - 4:00 PM A409 (Building No. 6)

Kazunori Ueno(Univ. of Tokyo)

2:00 PM - 2:15 PM

[15p-A409-5] Phase transition of high-quality epitaxial spinel Fe3O4 to γ-Fe2O3 thin films for spin-wave propagation

〇(D)Siyi Tang1, Md Shamim Sarker1, Kaijie Ma1, Hiroyasu Yamahara1, Munetoshi Seki1, Hitoshi Tabata1 (1.the University of Tokyo)

Keywords:Maghemite, Spin wave, Pulsed laser deposition

In this study, we fabricated high-quality epitaxial spinel ferrite Fe3O4 thin film as a template layer on conductive Nb:SrTiO3 substrate, then realized phase transition to γ-Fe2O3 by annealing method. Spin-wave was excited by a coplanar waveguide (CPW). Frequency shifts caused by the external in-plane magnetic field change, the frequency reaches 7.3 GHz at 80 mT, which shows higher spin-wave frequency property than the conventional YIG system.