Controlled magnetic reversal in Permalloy films patterned into artificial quasicrystals

Controlled magnetic reversal in Permalloy films patterned into artificial quasicrystals

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, cul...

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Veröffentlicht in:Physical review letters 2013-08, Vol.111 (7), p.077201-077201, Article 077201
Hauptverfasser: Bhat, V S, Sklenar, J, Farmer, B, Woods, J, Hastings, J T, Lee, S J, Ketterson, J B, De Long, L E
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container_end_page 077201
container_issue 7
container_start_page 077201
container_title Physical review letters
container_volume 111
creator Bhat, V S
Sklenar, J
Farmer, B
Woods, J
Hastings, J T
Lee, S J
Ketterson, J B
De Long, L E
description 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.
doi_str_mv 10.1103/PhysRevLett.111.077201
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title Controlled magnetic reversal in Permalloy films patterned into artificial quasicrystals
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