Title :
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
fDate :
11/1/1993 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
