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

Authors
  • Brandl, F.
  • Franke, K. J. A.
  • Lahtinen, T. H. E.
  • van Dijken, S.
  • Grundler, D.
Publication Date
Jan 01, 2014
Source
Infoscience @ EPFL
Keywords
License
Unknown
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Abstract

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.

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