Formation of flexible magneto-optical imaging sensor for the novel highly spatial resolution nondestructive inspection

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K14851
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 18010:Mechanics of materials and materials-related
• Research Institution: Suzuka National College of Technology
• Principal Investigator: Hashimoto Ryosuke 鈴鹿工業高等専門学校, その他部局等, 講師 (80783216)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 磁気光学効果 / 強磁性材料 / 非破壊検査

Outline of Final Research Achievements

This study shows that it is possible to fabricate a flexible magneto-optical sensor using a newly developed deposition method by spin coating process. Yttrium iron garnet powder were used as a magneto-optical material to obtain quantitative optical properties.
To improve transmittance of a fabricated sensor, yttrium aluminum garnet powder were prepared and investigated optical properties. The transmittance spectrum of the deposited films showed increasing trend. Then, aluminum-substituted yttrium iron garnet powder was deposited on a flexible substrate, and investigated optical and magneto-optical properties. As a result, this hybrid material showed translucency and large magneto-optical effect.

Free Research Field

電気・電子材料

Academic Significance and Societal Importance of the Research Achievements

磁気光学効果を用いたイメージング法による非破壊試験は、高速かつ容易にマイクロメートルオーダの革新的な空間分解能の欠陥画像を得ることが可能である。本研究では、材料組成を適切に設計することで、スピンコート法によりフレキシブルに湾曲する基板上に磁気光学材料が成膜可能であることを示し、定量的な物理特性を明らかにした。将来的には、非破壊試験の高精度化、高効率化を実現し、安心・安全な社会づくりに貢献できると期待される。