J. Physique Lett. 44, 541-546 (1983)
DOI: 10.1051/jphyslet:019830044013054100

Tensile stress effect on magnetic properties of cw-laser annealed amorphous Fe40Ni40P14B6 ribbons

L. Lanotte

Istituto di Fisica della Facoltà di Ingegneria, Università di Napoli, piazzale V. Tecchio, 80125 Napoli, Italy

Abstract
Measurements of the initial permeability as a function of tensile stress were performed in cw-laser annealed metglas 2826 (50 μm ribbon). The results indicate the possibility of decreasing the magnetization at a very low field by means of an appropriate applied tension. The dependence of the magnetostriction curves and the magnetoelastic wave amplitude on the tensile stress supplies experimental evidence of the above mentioned prediction. On the basis of current understanding of the inhomogeneous mode of deformation, an explanation of the observed effects is proposed.

Résumé
Nous avons mesuré la perméabilité magnétique initiale d'échantillons de metglass 2826 (ruban de 50 μm d'épaisseur), recuits par laser continu, en fonction de la contrainte de tension appliquée. Les résultats montrent qu'une tension convenable peut réduire l'aimantation à très faible champ. Les courbes de magnétostriction et la variation de l'amplitude de l'onde magnétoélastique, en fonction de la tension appliquée, confirment nos prévisions. Sur la base de la compréhension actuelle du mode inhomogène de déformation, nous proposons une explication des effets observés.

PACS
6180B - Ultraviolet, visible and infrared radiation effects.
7530C - Magnetic moments and susceptibility in magnetically ordered materials.
7530D - Spin waves in magnetically ordered materials.
7550K - Amorphous and nanostructured magnetic materials.
7560E - Magnetization curves, hysteresis, Barkhausen and related effects.
7570 - Magnetic films and multilayers.
7580 - Magnetomechanical and magnetoelectric effects, magnetostriction.

Key words
boron alloys -- iron alloys -- laser beam annealing -- magnetic properties of amorphous substances -- magnetic susceptibility -- magnetisation -- magnetoelastic waves -- metallic glasses -- nickel alloys -- phosphorus -- magnetic properties -- cw laser annealed -- amorphous Fe sub 40 Ni sub 40 P sub 14 B sub 6 ribbons -- permeability -- Metglas -- magnetization -- magnetostriction -- magnetoelastic wave amplitude -- tensile stress