Domain wall motion in RE-TM films with different thickness

Author

Pokhil, Taras G. ; Nikolaev, Evgeni N.

Author_Institution

Inst. of Energy Problems of Chem. Phys., Acad. of Sci., Moscow, Russia

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

2536

Lastpage

2538

Abstract

A thermally activated domain wall motion is studied in amorphous TbFe films with different thicknesses. The activation energy of the domain wall displacement process is determined for the films with various composition and thicknesses. It is about 2.5 eV. The activation volume of this process nonlinearly increases from 2×10^-18 cm³ to 7×10^-18 cm³ as the film thickness increases from 25 nm to 400 nm. The change of the domain shape with the film thickness growth and domain wall coercive force dependence on film thickness are discussed in terms of thermoactivated domain wall motion

Keywords

coercive force; ferrimagnetic properties of substances; iron alloys; magnetic domain walls; magnetic properties of amorphous substances; magnetic thin films; terbium alloys; 10 to 1000 nm; RE-TM films; TbFe amorphous films; activation energy; activation volume; domain shape; domain wall coercive force dependence; domain wall displacement process; film thickness growth; thermally activated domain wall motion; Amorphous materials; Chemicals; Coercive force; Crystalline materials; Equations; Magnetic films; Optical films; Physics; Shape; Temperature dependence;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280962

Filename

280962