Presentation Information
[15p-PB2-63]Influence of Substrate Wettability Magnetic Garnet Film Formation by Bar Coating
〇(B)Taichi Horiba1, Kazuki Hara1, Takumi Takano1, Ryosuke Hashimoto1 (1.SNCT)
Keywords:
Magnetic sensing,Magneto-optical imaging,Magnetic garnet thin films
Magnetic garnet thin films have been applied as magnetic field sensors for magneto-optical imaging. In this study, a fabrication process for flexible magneto-optical films using a bar-coating method without crystallization annealing has been developed. The leakage magnetic field from surface defects in magnetized steel specimens is converted into optical intensity via the Faraday effect. Increasing the film thickness improves sensor sensitivity. However, it is difficult to increase the film thickness due to surface tension and substrate wettability. Therefore, surface conditions and substrate hydrophilicity are evaluated to investigate the influence of substrate properties on film formation. As a result, improved substrate wettability is observed after ultraviolet irradiation. This result suggests that ultraviolet irradiation enables thick-film formation.