title: Perpendicular magnetic anisotropy in amorphous ferromagnetic CoSiB/Pt multilayers.
abstract: Magnetic anisotropy properties of amorphous ferromagnetic CoSiB/Pt multilayers with perpendicular magnetic anisotropy (PMA, K(u)) were systematically investigated as a function of CoSiB layer thickness (t(coSiB)) and Pt layer thickness (t(Pt)). In two series of [CoSiB t(coSiB)Pt t(P1)]5 multilayers, the perpendicular coercivity (H(c)) increased to reach a maximum and then decreased with further increase in both t(coSiB) and t(Pt), due to intermixing of CoSiB/Pt interfaces. Particularly, using the amorphous soft magnetic CoSiB, the coercivity became very sensitive to the CoSiB thickness. These multilayer films exhibited a high K(u) of 2 x 10(6) erg/cc and a high H(c) of 360 Oe with marked squareness. It was found that even after annealing at 350 degrees C, the CoSiB/Pt multilayers had a high PMA and their H(c) increased.
authors: Department of Electronics Engineering and Institute of Nano Science and Technology, Hanyang University, Seoul 133-791, Korea.
authors: J Y
authors: JY
authors: Hwang
authors: J S
authors: JS
authors: Park
authors: H I
authors: HI
authors: Yim
authors: T W
authors: TW
authors: Kim
authors: D Y
authors: DY
authors: Shin
authors: S B
authors: SB
authors: Lee