Investigations of CoNi patterns for VBL-stabilization in micromagnetic memories by wall resonance

Author

Heidmann, J. ; Dahlbeck, R. ; Krause, H. ; Engemann, J.

Author_Institution

Dept. of Electr. Eng., Wuppertal Univ., West Germany

Volume

24

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

3048

Lastpage

3050

Abstract

When bars of hard magnetic material like CoNi are used to stabilize pairs of vertical Bloch lines (VBLs) in a VBL memory, it is important to determine the local magnetic properties of the bars. A CoNi film with insufficient coercivity was used to demonstrate the potential usefulness of wall resonance spectroscopy for investigations of the coupling between topological structures and the domain wall with high spatial resolution. The measurements demonstrate that the shape of the wall resonance spectra (WRS) derived from a 4-μm-long wall section between two bars allows quantitative and qualitative determination of the magnetization state of the VBL confinement

Keywords

cobalt alloys; magnetic bubble memories; magnetic domain walls; magnetic thin films; magnetisation; nickel alloys; CoNi patterns; VBL-stabilization; coercivity; domain wall; local magnetic properties; magnetization state; micromagnetic memories; topological structures; vertical Bloch lines; wall resonance; Bars; Coercive force; Magnetic domain walls; Magnetic films; Magnetic materials; Magnetic properties; Magnetic resonance; Shape measurement; Spatial resolution; Spectroscopy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92330

Filename

92330