Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8156465 | Journal of Magnetism and Magnetic Materials | 2014 | 6 Pages |
Abstract
The magnetic domain wall energy density ÏW of a Ni/Co superlattice possessing perpendicular magnetic anisotropy was determined using the magnetic domain theory derived by Kooy and Enz (1960). To determine ÏW, we obtained the saturation magnetization, magnetic domain period, and perpendicular magnetic anisotropy energy by individual measurements. Using the magnetic domain period and the ferromagnetic layer thickness, we first determined the dipolar length. The estimated dipolar length was about 15-25Â nm, which is in good agreement with the change in the magnetization curve with the ferromagnetic layer thickness. By using the dipolar length and saturation magnetization, the ÏW was calculated to be 4-7Â erg/cm2.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Kentaro Toyoki, Takashi Nishimura, Shotaro Harimoto, Yu Shiratsuchi, Ryoichi Nakatani,