Presentation Information
[15p-PB2-62]Optical properties of magnetic garnet thin films for magneto-optical imaging
〇(B)Kazuki Hara1, Taichi Horiba1, Takano Takamitsu1, Hashimoto Ryosuke1 (1.SNCT)
Keywords:
magnetic sensing,Magneto-optical imaging,Magnetic garnet thin film
Magnetic garnet thin films exhibiting the Faraday effect have been used as magnetic field sensors for magneto-optical imaging. Magnetic garnet thin films capable of flexible bending are increasingly required as magnetic field sensors for curved structural surfaces. In this study, such films have been fabricated using a bar-coating method without post-deposition crystallization annealing. However, quantitative evaluation of the sensing performance of these films for magneto-optical imaging remains to be conducted. To evaluate sensing performance, a magneto-optical imaging system was constructed in which neodymium magnets arranged in a checkerboard pattern served as the magnetic-field source. An LED with a wavelength of 530 nm was used as the light source and its light was passed through polarizers in a cross-Nicol alignment. The sensing performance of the films was evaluated by analyzing the obtained magneto-optical images and quantifying pixel intensity variations associated with differences in magnetic polarity.