The Villari effect in Fe–Cr–B amorphous ribbons

The magnetic and magnetoelastic properties of ferromagnetic transition metal–metalloid (TM–M) amorphous alloys can be varied within large limits by chemical composition modification. Thermally activated structural relaxation or crystallization processes can be also used to optimize the macroscopic c...

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Veröffentlicht in:	Sensors and actuators. A, Physical Physical, 2003-09, Vol.106 (1-3), p.61-64
Hauptverfasser:	Mihalca, I, Ercuta, A, Ionascu, C
Format:	Artikel
Sprache:	eng
Schlagworte:	Amorphous alloys Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Fe and its alloys General equipment and techniques Instruments, apparatus, components and techniques common to several branches of physics and astronomy Magnetic properties and materials Magnetoelastic susceptibility Magnetostriction Physics Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing Structural relaxation Studies of specific magnetic materials
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Beschreibung
Zusammenfassung:	The magnetic and magnetoelastic properties of ferromagnetic transition metal–metalloid (TM–M) amorphous alloys can be varied within large limits by chemical composition modification. Thermally activated structural relaxation or crystallization processes can be also used to optimize the macroscopic characteristics. The present paper examines the changes in the magnetic and magnetoelastic properties of the Fe70Cr10B20 amorphous alloy induced by structural relaxation subsequent annealing. Experimental investigations using the Villari effect were performed. The alloy is nearly zero-magnetostrictive in both native and relaxed states. Important changes in the low field behaviour of the magnetostrictive strain observed after annealing, were attributed to the structural relaxation.
ISSN:	0924-4247 1873-3069
DOI:	10.1016/S0924-4247(03)00134-1