Title :
Effect of damping on dynamic distortion in magnetic garnet material
Author :
Bagnérés, Anne ; Redjdal, Makhlouf ; Humphrey, Floyd B.
Author_Institution :
IDOPT, Inst. Nat. de Recherche en Inf. et Autom., Grenoble, France
fDate :
11/1/1994 12:00:00 AM
Abstract :
Damping has a large effect on the dynamic character of domain walls in garnet material with structure within the walls. When a step change in bias field is applied to a wall containing a πVBL chain or a 2πVBL chain, the VBL velocity makes large changes in magnitude for the first 50 nsec when the damping is 0.1 and smoothly changes when the damping is 0.5. Dynamic distortion of 2πVBL also makes large swings in magnitude for low damping. Because the wall and VBL velocity as well as 2πVBL distortion change so markedly with time for low damping, it is clear that an increase in damping above the traditional α=0.1 is very desirable for material used in a VBL memory
Keywords :
garnets; magnetic bubbles; magnetic domain walls; magnetic domains; magnetic thin films; bias field; damping; domain walls; dynamic distortion; magnetic garnet material; step change; vertical Bloch lines memory; Computational modeling; Computer simulation; Damping; Equations; Garnets; Lattices; Magnetic domain walls; Magnetic materials; Magnetization; Periodic structures;
Journal_Title :
Magnetics, IEEE Transactions on
