Influence of bias field on dynamic conversion of bubbles

Author

Nepokoichitsky, G. ; Bettinger, T. ; Fernandez-de-Castro, J.J. ; Nyenhuis, J.A. ; Friedlaender, F.J.

Author_Institution

Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2825

Lastpage

2827

Abstract

Domain wall structure in moving magnetic bubbles was studied as a function of bubble size. The rotating gradient experiment was used to maintain the continuous motion of a bubble and to identify the structure of the domain wall. In the magnetic garnet sample studied, more state changes occurred in bubbles with larger diameters than in bubbles with smaller diameters; changes from winding number two to winding number three occurred more readily for smaller bubble diameters than for larger diameters. Mobility and coercivity are not significantly affected by changes in bubble size. An unexpected result of this work is the discovery of a new bubble structure with a mobility about an order of magnitude lower than that of other states in this sample

Keywords

garnets; lutetium compounds; magnetic bubbles; magnetic domain walls; samarium compounds; yttrium compounds; (YSmLu)₃(FeGa)₅O₁₂; YSmLuFe5O12Ga5O12; YSmLuIGGG; bias field; bubble size; coercivity; domain wall structure; dynamic conversion; garnet; mobility; moving magnetic bubbles; rotating gradient experiment; winding number; AC generators; Conductors; DC generators; Frequency; Garnets; Magnetic domain walls; Magnetic domains; Phase measurement; Pulse measurements; Rotation measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104889

Filename

104889