Micro-structured ferromagnetic tubes for spin wave excitation

Journal Article

Micron scale ferromagnetic tubes placed on the ends of ferromagnetic CoTaZr spin waveguides are explored in order to enhance the excitation of backward volume magnetostatic spin waves. The tubes produce a closed magnetic circuit about the signal line of the coplanar waveguide and are, at the same time, magnetically contiguous with the spin waveguide. This results in a ten-fold increase in spin wave amplitude. However, the tube geometry distorts the magnetic field near the spin waveguide, and relatively high biasing magnetic fields are required to establish well-defined spin waves. Only the lowest (uniform) spin wave mode is excited. © 2011 American Institute of Physics.

Full Text

Duke Authors

Cited Authors

  • Kozhanov, A; Ouellette, D; Rodwell, M; Allen, SJ; Lee, DW; Wang, SX

Published Date

  • April 1, 2011

Published In

Volume / Issue

  • 109 / 7

International Standard Serial Number (ISSN)

  • 0021-8979

Digital Object Identifier (DOI)

  • 10.1063/1.3559475

Citation Source

  • Scopus