The Japan Society of Applied Physics

2023 International Conference on Solid State Devices and Materials

2023 International Conference on Solid State Devices and Materials

2023年9月5日 〜 2023年10月31日
Nagoya Congress Center

13:44 〜 13:46

[SO-PS-08-08] Comparison of Magnetic Domain Formation in CoFe/MgO Nanolayer Patterns on SiO2/Si (111) and GaAs (001) Substrates

Yu Fujiwara1, Rui Ochiai1, Li Zi1, Masashi Akabori2, ○Shinjiro Hara1 (1. Research Center for Integrated Quantum Electronics, Hokkaido Univ., Sapporo (Japan), 2. Center for Nano Materials and Technology, Japan Advanced Institute of Sci. and Tech., Ishikawa (Japan))

Magnetic domains of CoFe/MgO nanolayer patterns with different nanolayer thicknesses deposited on amorphous SiO2/Si (111) substrates were characterized by magnetic force microscopy at room temperature without any external magnetic field. The results show that the aspect ratios and layer thicknesses of nanolayer patterns in the current work are not sufficient for stably obtaining a single magnetic domain on amorphous SiO2/Si (111) substrates, although CoFe/MgO nanolayer patterns on single-crystal GaAs (001) substrates show stably a single magnetic domain, depending on the aspect ratios and layer thicknesses of nanolayer patterns.