Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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
Journal of Applied Physics


magnetic force microscopy imaging, magnetization reversal, perpendicular anisotropy


Cheng, X. , Nikitenko, V. , Shapiro, A. , Shull, R. and Chien, C. (2006), Unusual Magnetization Reversal in [Co/Pt]4 Multilayers With Perpendicular Anisotropy, Journal of Applied Physics, [online], (Accessed June 15, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created April 20, 2006, Updated October 12, 2021