Dynamics of wall and Bloch line motion using 3D simulations

Author

Bagnérés, A. ; Patterson, G.N. ; Humphrey, F.B.

Author_Institution

Boston Univ., MA, USA

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

5501

Lastpage

5504

Abstract

Three-dimensional numerical experiments have been performed on a stripe domain in a magnetic bubble garnet material to study the dynamics of vertical Bloch lines (VBLs). The authors have modeled a stripe with two domain walls at equilibrium, one wall containing a winding VBL pair and the other structureless. When a bias field pulse with 10 ns risetime is applied, the walls move together at 77 m/s and 33 m/s, with the VBLs moving at 178 m/s. Overshoot in the wall motion was observed and attributed to the relaxation of the horizontal Bloch lines (HBLs) formed in the structureless wall. Contours of the in-plane angle of the magnetization in the wall with the VBL pair distort during wall motion; however, it was possible to see some influence of HBL formation on VBL motion

Keywords

garnets; magnetic bubbles; magnetic domain walls; magnetisation; 3D simulations; Bloch line motion; bias field pulse; garnet material; magnetic bubble; magnetization; relaxation; stripe domain; structureless wall; vertical Bloch lines; wall motion; winding VBL pair; Anisotropic magnetoresistance; Demagnetization; Equations; Garnets; Gaussian processes; Lattices; Magnetic devices; Magnetic domain walls; Magnetic domains; Magnetic materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278883

Filename

278883