[1Ca02-12] SS1

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

*Liliany Noviyanty Pamasi¹, Aydar Irmikimov¹, Yuya Sakai¹, Tomoya Shimizu¹, Haobang Yang¹, Nobuyoshi Hosoito¹, Azusa Hattori², Ai Osaka², Hidekazu Tanaka², Ken Hattori¹ (1. Nara Institute of Science and Technology, 2. Institute of Scientific and Industrial Research Osaka University)

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.