Abstract
We have patterned novel Permalloy thin films with quasicrystalline Penrose 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.
- Received 19 May 2013
DOI:https://doi.org/10.1103/PhysRevLett.111.077201
© 2013 American Physical Society