We have performed broadband (10 MHz–18 GHz) and narrowband (9.7 GHz) ferromagnetic resonance (FMR) measurements on permalloy thin films patterned with quasiperiodic Ammann tilings having eightfold rotational symmetry. We observed highly reproducible mode structures in the low-frequency, hysteretic regime in which domain walls and unsaturated magnetization textures exist. A minimum of 10 robust modes were observed in patterned samples, compared to the single uniform mode observed in unpatterned permalloy films. The field dependence and approximate eightfold rotational symmetry of the FMR spectra are in good agreement with micromagnetic simulations that confirm the importance of patterning for controlling static and dynamic magnetic response.

Document Type


Publication Date


Notes/Citation Information

Published in Journal of Applied Physics, v. 115, no. 17C502.

Copyright 2014, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

This article appeared in Journal of Applied Physics, v. 115, no. 17C502 and may be found at http://dx.doi.org/10.1063/1.4859035.

The copyright holder has granted the permission for posting the article here.

Digital Object Identifier (DOI)