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|Author(s):||Michael L. Schneider; Justin M. Shaw; Anthony B. Kos; Thomas Gerrits; Thomas J. Silva; Robert D. McMichael;|
|Title:||Spin dynamics and damping in nanomagnets measured directly by frequency-resolved magneto-optic Kerr effect|
|Published:||November 27, 2007|
|Abstract:||The spin dynamics of sub-100 nm Ni80Fe20 nanomagnets are directly measured using the magneto-optic Kerr effect and a broadband detection scheme. Elliptical dots approximately 68nm in diameter and 10 nm thick were fabricated in 20x20υm^2^ arrays. There is approximately a factor of 2 increase in the effective linewidth when compared to a 20 υm^2^ diameter continuous disk of the same material. Using micromagnetic simulations, we model the effect of dot-to-dot size variation on the effective linewidth and find that 2 nm size variations are more than sufficient to account for the effective increase in linewidth.|
|Citation:||Physical Review Letters|
|Pages:||pp. 103909-1 - 103909-5|
|Keywords:||magnetic nano-dots,magneto optics,magnetodynamics|
|PDF version:||Click here to retrieve PDF version of paper (466KB)|