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Search Publications by: Justin Shaw (Fed)

Displaying 151 - 162 of 162

Reversal mechanisms in perpendicular magnetic nanostructures

July 16, 2008

Author(s)

Justin M. Shaw, Stephen E. Russek, Michael J. Donahue, Thomas Thomson, Bruce Terris, Michael Schneider, Miles Olsen

We find that the reversal mechanism in magnetic nanostructures is highly dependent on the nature and condition of the edges. Temperature and size dependent reversal properties of fabricated perpendicularly magnetized nanostructures down to 25 nm in

Spin dynamics and damping in nanomagnets measured directly by frequency-resolved magneto-optic Kerr effect

November 27, 2007

Author(s)

Michael Schneider, Justin Shaw, Anthony B. Kos, Thomas Gerrits, Thomas J. Silva, Robert McMichael

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

Surface-plasmon enhancement of Brillouin light scattering from gold-nanodisk arrays on glass

September 22, 2007

Author(s)

Zhandos Utegulov, Justin Shaw, B. T. Draine, S. A. Kim, Ward L. Johnson

Enhancement of Brillouin light scattering (BLS) at the wavelength of 532 nm was observed from Rayleigh-like and Sezawa-like acoustic modes of alkaline-earth bror-aluminosilicate glass covered with periodic arrays of gold nanodisks. This enhancement is

Structure, spin-dynamics, and magnetic properties of annealed nanoscaled Fe layers on GaAs

February 2, 2007

Author(s)

Justin Shaw, Charles M. Falco

We performed a detailed study of the effect of annealing (at temperatures up to 300°C) on 0.2-3.0 nm thick epitaxial Fe layers deposited on GaAs(001). Using Brillouin light scattering, we studied the magnetic properties and spin dynamics of these layers

Origins of switching field distributions in perpendicular magnetic nanodot arrays

January 19, 2007

Author(s)

Justin Shaw, William Rippard, Stephen E. Russek, Tim Reith, Charles M. Falco

We studied the reversal properties of perpendicularly magnetized Co/Pd nanodots from 100 to 50 nm in diameter fabricated using electron beam lithography. Polycrystalline Co/Pd multilayers show considerable differences in the switching field distribution

Dynamic Lorentz Microscopy of Micromagnetic Structure in Magnetic Tunnel Junctions

November 20, 2006

Author(s)

Justin Shaw, R.H. Geiss, Stephen E. Russek

Lorentz microscopy was used to study the micromagnetic structure and magnetization reversal in magnetic tunnel junctions (MTJs) fabricated with different processing conditions including a preoxidation process. The authors find that the free layer in a MTJ