Magnetization dynamics of pinned domain walls in partially crystallized ribbons

Author

Betancourt, I. ; Valenzuela, R.

Author_Institution

Inst. for Mater. Res., Nat. Univ. of Mexico, Mexico

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3973

Lastpage

3974

Abstract

The frequency dependence of the permeability of Co- and Fe-rich amorphous ribbons (Vitrovac 6025(R) and Metglas(R) 2605 SC, respectively), submitted to a variety of thermal treatments involving different degrees of crystallization, was measured in the 5 Hz-13 MHz frequency range. The quasi-static initial permeability, μ_i, and the domain wall relaxation frequency, f_x, exhibited an inverse relationship, μ_i·f_x=constant. These results are interpreted in terms of variations in the average distance between pinning points of domain walls, and the effects of such variations on the vibrational properties of pinned domain walls

Keywords

amorphous magnetic materials; boron alloys; cobalt alloys; crystallisation; ferromagnetic materials; heat treatment; iron alloys; magnetic domain walls; magnetic permeability; magnetisation; metallic glasses; molybdenum alloys; silicon alloys; 5 Hz to 13 MHz; Co-rich amorphous ribbons; Co₆₆Fe₄Mo₂B₁₂Si ₁₆; Fe-rich amorphous ribbons; Fe₈₁B_13.5Si_3.5C₂; Metglas 2605 SC; Vitrovac 6025; domain wall pinning points; domain wall relaxation frequency; magnetization dynamics; partially crystallized ribbons; pinned domain walls; quasi-static initial permeability; thermal treatments; vibrational properties; Amorphous materials; Annealing; Crystallization; Frequency measurement; Impedance; Magnetic analysis; Magnetic domain walls; Magnetic properties; Magnetization; Permeability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.619633

Filename

619633