Influence of the Inverse Faraday Effect on Switching and Oscillations of Magnetization in Single-Domain Nanoparticles

Authors A.V. Kukharev, A.L. Daniluyk
Affiliations Belarusian State University of Informatics and Radioelectronics, 6, P. Browka Str., 220013 Minsk, Belarus
Issue Volume 4, Year 2012, Number 1
Dates Received 30 October 2011; published online 14 March 2012
Citation A.V. Kukharev, A.L. Daniluyk, J. Nano-Electron. Phys. 4 No 1, 01025 (2012)
PACS Number(s) 5.75.+a, 78.20.Ls
Keywords Magnetic properties of nanoparticles (2) , Magnetic oscillations, Magnetooptics.
Annotation We have performed a numerical simulation of magnetization switching and oscillations in a ferromagnetic single-domain particle in the disk form under the influence of nanosecond laser pulses with linear and circular polarization. The analysis has shown that the interaction of laser pulses with a ferromagnetic nanodisk leads to change in the direction of its magnetization. This process is accompanied by magnetization oscillations with duration from units to tens of nanoseconds. As it follows from the obtained results, the main cause of magnetization switching is the reduction of magnetic anisotropy energy at heating of the structure by laser. The field of the inverse Faraday effect can lead to an increase in frequency and amplitude of this oscillations.

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