Title :
Magnetic Properties of Amorphous Magnetic Film on Self-Assembled Convex Pattern
Author :
Iwata, Noboru ; Honda, Daisuke ; Murakami, Yoshiteru ; Takahashi, Akira
Author_Institution :
Adv. Technol. Res. Labs., SHARP Corp., Tenri
Abstract :
In this paper, we evaluated magnetic properties of amorphous Tb-Fe-Co magnetic film on self-assembled convex pattern fabricated using conventional sputtering and reactive ion etching equipments. Fabricated pattern had 2-D periodicity of around 28 nm. Tb-Fe-Co film on the pattern indicated that the domain-wall (DW) energy was reduced at the steep region of the pattern, and magnetic reversal behavior became more like Stoner-Wohlfarth mode than DW motion mode. Magnetic force microscope observation showed the magnetic domain whose sizes are as small as 50 nm.
Keywords :
amorphous magnetic materials; cobalt alloys; iron alloys; magnetic domain walls; magnetic force microscopy; magnetic thin films; perpendicular magnetic anisotropy; self-assembly; silicon; sputter deposition; sputter etching; terbium alloys; DW motion mode; Si; Stoner-Wohlfarth mode; TbFeCo; amorphous magnetic film deposition; conventional sputtering; domain wall energy; magnetic force microscope observation; magnetic properties; perpendicular anisotropy; reactive ion etching equipments; self-assembled convex pattern; Amorphous magnetic films; heat-assisted magnetic recording; magnetic domains; magnetization reversal;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2008.2001582
