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

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4389

Lastpage

4391

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334097

Filename

334097