Magnetic structure and anisotropy of [Co/Pd](5)/NiFe multilayers

TitleMagnetic structure and anisotropy of [Co/Pd](5)/NiFe multilayers
Publication TypeJournal Article
Year of Publication2015
AuthorsTryputen, L, Guo, F, Liu, F, Nguyen, TNAnh, Mohseni, MS, Chung, S, Fang, Y, Akerman, J, McMichael, RD, Ross, CA
JournalPhysical Review B
Volume91
Issue1
Pagination014407
Date Published2015/01/09/
Abstract

The magnetization behavior, magnetic anisotropy, and domain configurations of Co/Pd multilayers with perpendicular magnetic anisotropy capped with permalloy is investigated using magnetometry, magnetic force microscopy, and ferromagnetic resonance. The thickness of the Ni80Fe20 layer in [Co/Pd](5)/NiFe (t) was varied from t = 0 to 80 nm in order to study the interplay between the anisotropy and magnetization directions of Co/Pd and NiFe. By varying the thickness of the NiFe layer, the net anisotropy changes sign, but domains with plane- normal magnetization are present even for the thickest NiFe. Ferromagnetic resonance measurements show a decrease in damping with increasing NiFe thickness. The results demonstrate how the magnetic behavior of mixed- anisotropy thin films can be controlled.