Spin waves in CoFeB on ferroelectric domains combining spin mechanics and magnonics

Spin dynamics controlled by magnetoelastic coupling and applied electric fields might play a vital role in future developments of magnonics, i.e., the exploitation of spin waves for the transmission and processing of information. We have performed broadband spin-wave spectroscopy on a magnetostricti...

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Bibliographic Details
Published in:Solid state communications 2014-11, Vol.198, p.13-17
Main Authors: Brandl, F., Franke, K.J.A., Lahtinen, T.H.E., van Dijken, S., Grundler, D.
Format: Article
Language:English
Subjects:
A. Ferroelectric
A. Ferromagnetic
D. Magnetoelectric coupling
D. Magnonics
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Summary:Spin dynamics controlled by magnetoelastic coupling and applied electric fields might play a vital role in future developments of magnonics, i.e., the exploitation of spin waves for the transmission and processing of information. We have performed broadband spin-wave spectroscopy on a magnetostrictive CoFeB alloy grown on a ferroelectric BaTiO3 substrate causing elastic strain with a quasi-periodic modulation. We find characteristic eigenfrequencies and spin-wave modes with large group velocities and small damping. These results suggest bright perspectives for electric-field control of reprogrammable magnonics. •We have grown CoFeB on BaTiO3 exhibiting stripe-like ferroelectric a1 and a2 domains.•We find characteristic eigenfrequencies and spin-wave modes.•The results suggest new perspectives for electric-field control of magnonic devices.
ISSN:0038-1098
1879-2766
DOI:10.1016/j.ssc.2013.12.019