Controlled Magnetic Reversal in Permalloy Films Patterned into Artificial Quasicrystals

Authors

Vinayak Shantaram Bhat, University of KentuckyFollow
J. Sklenar, Northwestern University
B. Farmer, University of Kentucky
J. Woods, University of Kentucky
Jeffrey Todd Hastings, University of KentuckyFollow
S. J. Lee, Northwestern University
J. B. Ketterson, Northwestern University
Lance E. De Long, University of KentuckyFollow

Abstract

We have patterned novel Permalloy thin films with quasicrystalline Penrose P2 tilings and measured their dc magnetization and ferromagnetic resonance absorption. Reproducible anomalies in the hysteretic, low-field data signal a series of abrupt transitions between ordered magnetization textures, culminating in a smooth evolution into a saturated state. Micromagnetic simulations compare well to experimental dc hysteresis loops and ferromagnetic resonance spectra and indicate that systematic control of magnetic reversal and domain wall motion can be achieved via tiling design, offering a new paradigm of magnonic quasicrystals.

Document Type

Article

Publication Date

8-16-2013

Notes/Citation Information

Published in Physical Review Letters, v. 111, no. 7, 077201.

© 2013 American Physical Society.

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

Digital Object Identifier (DOI)

http://dx.doi.org/10.1103/PhysRevLett.111.077201

Repository Citation

Bhat, Vinayak Shantaram; Sklenar, J.; Farmer, B.; Woods, J.; Hastings, Jeffrey Todd; Lee, S. J.; Ketterson, J. B.; and De Long, Lance E., "Controlled Magnetic Reversal in Permalloy Films Patterned into Artificial Quasicrystals" (2013). Physics and Astronomy Faculty Publications. 4.
https://uknowledge.uky.edu/physastron_facpub/4