Unusual Magnetization Reversal in [Co/Pt]4 Multilayers With Perpendicular Anisotropy
X M. Cheng, Valerian I. Nikitenko, Alexander J. Shapiro, Robert D. Shull, C L. Chien
Unusual magnetization reversal of [Co(4 )/Pt(10 )]4 multilayers with perpendicular magnetic anisotropy has been revealed macroscopically by magnetometry measurements and microscopically by magneto-optical Kerr effect (MOKE) microscopy and magnetic force microscopy (MFM) imaging. During the first order reversal process, the magnetization first decreases, reaches a plateau, and finally rises back to saturation, corresponding to respectively. expanding bubble domains, stationary domains, and domains with unchanged boundaries but fading contrast. MFM imaging reveals the existence of many submicron-scaled unreversed channels within the boundary of the bubble domains. The magnetization reversal behavior can be accounted for by the evolution of the unusual domain structures in different field regimes
magnetic force microscopy imaging, magnetization reversal, perpendicular anisotropy
, Nikitenko, V.
, Shapiro, A.
, Shull, R.
and Chien, C.
Unusual Magnetization Reversal in [Co/Pt]4 Multilayers With Perpendicular Anisotropy, Journal of Applied Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=853410
(Accessed December 7, 2023)