[24p-P01-1~28] 10 Spintronics and Magnetics(Poster)

[24p-P01-16] Ferromagnetic resonance and magnetic damping anomaly in Fe_1-xRh_x ordered alloy thin films

〇(B)Yuko Osawa¹, Hiroki Omura¹, Sachio Komori¹, Keiichiro Imura¹, Tomoyasu Taniyama¹ (1.Nagoya Univ.)

Keywords:ordered alloy thin films, magnetic damping

Although the magnetic damping constant α of Fe_1-xRh_x alloy thin films has been shown to be very low ~9×10^-4, the mechanism of the low damping is still elusive. In this study, we report on further anomalous behavior of the magnetic damping in Fe_1-xRh_x alloy thin films near x=0.20. In particular, we find that the magnetic damping is shown to be negative for films with x=0.22. The reason of the anomalous behavior will be discused in the presentation.