[17p-D419-1~15] 6.4 Thin films and New materials

[17p-D419-4] Research on improvement gyromagnetic ratio of Bismuth-substituted magnetic garnet

〇Wataru Asano¹, Takao Nishi², Daiki Oshima³, Takeshi Kato³, Kiejin Lee⁴, Masami Kawahara⁵, Masami Nishikawa¹, Takayuki Ishibashi¹ (1.Nagaoka Univ. Tech., 2.Kobe City College Tech., 3.Nagoya Univ., 4.Sogang Univ., 5.Kojundo Chem.)

Keywords:bi-substituted rare-earth iron, ferromagnetic resonance, high frequency property

It is expected that ferromagnetic resonance frequency increased at compensation point for an angular momentum. In this study, EuBi₂Fe_5-xGa_xO₁₂ thin films prepared by metal-organic decomposition method were characterized by magneto-optical measurements and ferromagnetic resonance measurements. Compensation points for magnetization and an angular momentum were found at Ga compositions of 1 – 1.5 and 0.5 -1, respectively. Magnetic rotation ratio was increased at Ga compositions of 1 and 1.5.