Magnetization process in Permalloy multilayer films

Author

Puchalska, Irena B. ; Niedoba, Halina

Author_Institution

CNRS Lab. de Magnetisme et Materiaux Magnetiques, Meudon-Bellevue, France

Volume

27

Issue

4

fYear

1991

fDate

7/1/1991 12:00:00 AM

Firstpage

3579

Lastpage

3587

Abstract

The magnetization process in positively coupled double and multilayered systems of Permalloy separated by carbon layers has been investigated. Domain patterns appearing in this process have been observed by both Lorentz electron microscopy and high-resolution Kerr effect. The patterns display a microstructure different from that observed in the single films, e.g., twin walls with crossing points, quasi-walls, superimposed cross and circular Bloch lines, and 360 degrees walls. The origin of the observed structures is analyzed. The effects of magnetic flux closure are shown.

Keywords

Kerr magneto-optical effect; Permalloy; ferromagnetic properties of substances; magnetic domain walls; magnetic domains; magnetic hysteresis; magnetic thin films; magnetisation; FeNi-C; Lorentz electron microscopy; Neel walls; Permalloy multilayer films; circular Bloch lines; domain patterns; high-resolution Kerr effect; magnetic flux closure effects; magnetisation hysteresis; magnetization process; microstructure; twin walls; Couplings; Displays; Electron microscopy; Kerr effect; Magnetic analysis; Magnetic domain walls; Magnetic films; Magnetic multilayers; Magnetization processes; Microstructure;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.102930

Filename

102930