Nonlinear Processes in Magnetic Nanodots under Perpendicular Pumping: Micromagnetic Simulations

Authors D.V. Slobodiainuk, G.A. Melkov

National T. Shevchenko university of Kyiv, faculty of radiophysics, 64, Volodymyrs’ka Str., 01601 Kyiv, Ukraine

Issue Volume 5, Year 2013, Number 1
Dates Received 10 December 2012; published online 28 March 2013
Citation D.V. Slobodiainuk, G.A. Melkov, J. Nano- Electron. Phys. 5 No 1, 01026 (2013)
PACS Number(s) 75.40.Gb, 73.30.Ds, 75.75. – c
Keywords Nanodot, Permalloy, Perpendicular pumping, Suhl instability, Kinetic instability.
Annotation Processes that take place in permalloy nanodots under external electromagnetic pumping are considered. It is shown that in such system similar to bulk samples Suhl and kinetic instability processes are possible. Using micromagnetic simulations approach key features of mode excitation with an external pumping power increase were revealed. Results of the simulations were compared with published experimental data dedicated to investigation of magnetic nanodotes in nonlinear regime.

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