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.

Modification of edge mode dynamics of oxidized Ni80Fe20 thin film edges



Meng Zhu, Robert D. McMichael


We use ''edge mode'' ferromagnetic resonance (FMR) to probe the magentic properties of oxidized Ni80Fe20 (Py) nanostripe edges. The oxidation is carried out using either oxygen plasma or thermal annealing in an oxygen ambient. We find that for both treatments the edge saturation field decreases systematically with increasing oxidation due to reduced magnetization near the edges. However, the change of effective out-of-plane anisotropy field shows opposite trends for these two oxidation methods. Micromagnetic simulations suggest that thermally annealed samples may have an additional reduction in the bulk magnetization, possibly due to a compositional change in Py stripes. The two distinct oxidation profiles also result in different changes in resonance linewidth from which we find little damping change for plasma treatment but an enhanced effective damping for thermal annealing.
Journal of Applied Physics


magnetization dynamics, edge oxidation


Zhu, M. and McMichael, R. (2010), Modification of edge mode dynamics of oxidized Ni<sub>80</sub>Fe<sub>20</sub> thin film edges, Journal of Applied Physics, [online], (Accessed May 22, 2024)


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

Created May 20, 2010, Updated February 19, 2017