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임호택(Ho-Tack Lim),유천열(Chun-Yeol You) 한국자기학회 2005 韓國磁氣學會誌 Vol.15 No.6
Effect of a ferromagnetic layer thickness on a narrow domain wall width is investigated. It is found that the narrow domain wall is formed in ferromagnetic/nonmagnetic/ferromagnetic multilayer structure with a local interlayer exchange coupling, and that the width of the narrow domain wall is affected by the ferromagnetic layer thickness. We performed micromagnetics simulations for the Fe₁/Cr/Fe₂ system with the local interlayer exchange coupling, with fixed thickness (20-㎚) of Fe₂ layer and various Fe₁ layer thickness (1, 2, 4, and 6 ㎚). Consequently, we confirmed that the thinner the Fe₁ layer thickness, the thinner the width of the domain wall is formed, because of the surface energy nature of the interlayer exchange coupling.