Nonlinear Ferromagnetic Resonance in Nanostructures Having Discrete Spectrum of Spin-Wave Modes

Author

Melkov, G.A. ; Slobodianiuk, D.V. ; Tiberkevich, V.S. ; de Loubens, G. ; Klein, O. ; Slavin, A.N.

Author_Institution

Taras Shevchenko Nat. Univ. of Kyiv, Kiev, Ukraine

Volume

4

fYear

2013

fDate

2013

Firstpage

4000504

Lastpage

4000504

Abstract

Nonlinear ferromagnetic resonance (NFMR) at the nanoscale differs from the same phenomenon in bulk magnetic samples due to the nanosize-related discreteness of the spin wave spectrum. Because of the spectrum discreteness, the conservation laws for multiwave parametric interaction processes cannot be fulfilled exactly and become nonresonant. The presence of the nonresonant parametric processes in a strongly driven magnetic nanosystem can be detected experimentally as distortions on the NFMR curve caused by the nonresonant excitation of spin wave modes.

Keywords

ferromagnetic resonance; nanomagnetics; spin waves; NFMR curve; bulk magnetic samples; conservation laws; discrete spectrum; multiwave parametric interaction process; nanosize-related discreteness; nanostructures; nonlinear ferromagnetic resonance; nonresonant excitation; nonresonant parametric process; spectrum discreteness; spin wave spectrum; spin-wave modes; strongly driven magnetic nanosystem; Damping; Magnetic resonance; Magnetic separation; Magnetomechanical effects; Nanoscale devices; Saturation magnetization; Nanomagnetics; nonlinear ferromagnetic resonance; spin waves;

fLanguage

English

Journal_Title

Magnetics Letters, IEEE

Publisher

ieee

ISSN

1949-307X

Type

jour

DOI

10.1109/LMAG.2013.2278682

Filename

6595654