Title :
Dynamics of magnetization reversal in a 28×4 μm permalloy microstructure
Author :
Stankiewicz, A. ; Hiebert, W.K. ; Ballentine, G.E. ; Marsh, K.W. ; Freeman, M.R.
Author_Institution :
Dept. of Phys., Alberta Univ., Edmonton, Alta., Canada
fDate :
7/1/1998 12:00:00 AM
Abstract :
Temporally and spatially resolved study of magnetization reversal in a 20×4 μm, 50 nm thick permalloy sample was done using scanning Kerr microscopy. It is shown that the process starts with periodic-like instability, but then develops from both short edges towards the center. After switching the pulse field off, the initial condition is restored by creation of a domain along the long axis of the sample and gradual broadening of this domain
Keywords :
Kerr magneto-optical effect; Permalloy; ferromagnetic materials; magnetic domains; magnetisation reversal; spin dynamics; 20 mum; 4 mum; 50 nm; FeNi; broadening; domain; dynamics; magnetization reversal; periodic-like instability; permalloy microstructure; scanning Kerr microscopy; short edges; spatially resolved study; switching; temporally resolved study; Gold; Magnetic field measurement; Magnetic force microscopy; Magnetization reversal; Microstructure; Power transmission lines; Saturation magnetization; Testing; Transmission line measurements; Transmission line theory;
Journal_Title :
Magnetics, IEEE Transactions on
