The statistical properties of the Barkhausen noise (BN) in thin amorphous films are studied as a function of both the nominal composition and the thickness. BN was observed in single films with nominal compositions Fe_73.5 Cu_1 Nb_3 Si_(22.5-x) B_x (with x = 4 and 9) in the thickness range 20 nm–5 mm. The distributions of Barkhausen jump sizes and duration times were obtained and fitted to power laws with critical exponents tau=1.25+-0.05 and a alpha=1.60+-0.05, respectively.
Effects of thickness on the statistical properties of the Barkhausen noise in amorphous films / L., Santi; F., Bohn; A. D. C., Viegas; Durin, Gianfranco; Magni, Alessandro; R., Bonin; S. ZAPPERI AND R. L., Sommer. - In: PHYSICA. B, CONDENSED MATTER. - ISSN 0921-4526. - 384:(2006), pp. 144-146. [10.1016/j.physb.2006.05.176]
Effects of thickness on the statistical properties of the Barkhausen noise in amorphous films
DURIN, GIANFRANCO;MAGNI, ALESSANDRO;
2006
Abstract
The statistical properties of the Barkhausen noise (BN) in thin amorphous films are studied as a function of both the nominal composition and the thickness. BN was observed in single films with nominal compositions Fe_73.5 Cu_1 Nb_3 Si_(22.5-x) B_x (with x = 4 and 9) in the thickness range 20 nm–5 mm. The distributions of Barkhausen jump sizes and duration times were obtained and fitted to power laws with critical exponents tau=1.25+-0.05 and a alpha=1.60+-0.05, respectively.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
