Please use this identifier to cite or link to this item:
|Title:||Magnetization reversal and spin waves in exchange coupled NiFe/Cu/Co nanodisks|
|Citation:||Madami, M., Tacchi, S., Gubbiotti, G., Bonanni, V., Bisero, D., Vavassori, P., Adeyeye, A.O., Goolaup, S., Singh, N., Spezzani, C. (2009). Magnetization reversal and spin waves in exchange coupled NiFe/Cu/Co nanodisks. Journal of Applied Physics 105 (7) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3070643|
|Abstract:||We present an experimental study of the static and high frequency dynamic properties of NiFe (10 nm) /Cu (tCu) /Co (10 nm) nanometric disks for different values of the Cu spacer thickness (tCu =0.7, 1.2, and 2.0 nm). We found that the exchange interlayer coupling dominates over the dipolar interaction favoring parallel alignment between the two layers of magnetization with formation of vortex states at remanence. Brillouin light scattering technique from thermally excited spin waves was used to estimate the value of the interlayer exchange coupling in the unpatterned NiFe/Cu/Co films as well as to investigate the magnetic normal modes in the corresponding multilayered nanodisks. In the latter case, evidence is given for a discretization of the measured spectrum with reduction in the mode frequency associated to the demagnetizing effect induced by lateral confinement. Micromagnetic simulations indicate that these discrete modes correspond to an in-phase precession of the magnetization in the two ferromagnetic layers while, at variance with the continuous film, no evidence of optical modes is obtained. © 2009 American Institute of Physics.|
|Source Title:||Journal of Applied Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Nov 16, 2018
WEB OF SCIENCETM
checked on Oct 31, 2018
checked on Oct 20, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.