[1Ca02-12] 表面科学(物性)

[1Ca02R] Magnetism of epitaxial Fe nanofilms on three-dimensionally structuralized Si {111} facet surfaces

*Pamasi Liliany¹、Irmikimov Aydar¹、阪井 雄也¹、清水 智也¹、楊 浩邦¹、細糸 信好¹、服部 梓²、大坂 藍²、田中 秀和²、服部 賢¹ (1. 奈良先端科学技術大学院大学、2. 産業科学研究所大阪大学)

Our group has successfully fabricated pyramidal structures with Si{111} clean faceted surfaces (edge width W 16 μm) on Si(001) substrate by combining Si substrate processing technology and ultra-high vacuum surface technology, and performed Fe deposition (film thickness ΘFe 30 nm). The magnetization field (M-H) curve of the pyramid-shaped Fe nanofilm controlled with atomic precision was measured by vibrating sample magnetometer, and the characteristic of the M-H curve (bending point due to stable magnetic vortex formation) predicted by LLG was observed [3].
In the present study, in order to further understand the magnetic behavior of three-dimensional magnetic nanofilms, we have investigated 1) the thickness dependence of Fe film and 2) the aspect ratio dependence of the pyramidal structure with different length (L) and fixed-width (W), that is, the facet line structure. In this talk, we will report the details.