J. Phys. IV France
Volume 08, Numéro PR2, June 1998
Soft Magnetic Materials 13
Page(s) Pr2-539 - Pr2-542
Soft Magnetic Materials 13

J. Phys. IV France 08 (1998) Pr2-539-Pr2-542

DOI: 10.1051/jp4:19982125

Magnetomechanical behaviour in GO and NO Fe3%Si alloys

D.W. Shin1, J. Degauque2 and B. Astie1

1  Laboratoire de la Matière Condensée, INSA, UMR-CNRS, 31077 Toulouse, France
2  INSA, Département de Physique, Complexe Scientifique de Rangueil, 31077 Toulouse cedex, France

Magnetomechanical damping (MMD) and mechanical Barkhausen noise power (MBP) of NO and GO Fe-3%Si strips under torsional stress (frequency = 1Hz) are studied as a function of the major axis direction with respect to the rolling direction (θ = 0°, 23°, 45°, 55°, 67°, 90°). For all orientations, NO strips show a relatively high MMD while MBP is always small ; for GO strips, only θ = 55 ° gives significative magnetomechanical effects showing the participation of 90° domain walls which should perform large Barkhausen discontinuities. These magnetomechanical effects are signifïcantly influenced by the glass film on the GO strip surfaces.

© EDP Sciences 1998