Effect of the demagnetisation factor on the Barkhausen noise signal

Bhattacharya, D K and Vaidyanathan, S (1997) Effect of the demagnetisation factor on the Barkhausen noise signal. Journal of Magnetism and Magnetic Materials, 166 (1-2). pp. 111-116.

Full text not available from this repository.


In the presence of a demagnetisation factor, a splitting of the magnetic Barkhausen noise (MBN) signal distribution was observed in the form of two peaks during a slowly varying magnetisation sweep through specimens of an alloy steel. On the other hand, for closed field magnetisation, a single peak was observed at the coercivity point. The demagnetisation factor was introduced by solenoid coil magnetisation and by providing air gaps in specimens magnetised by a ‘U’-shaped yoke. The results show the importance of a standard mode of magnetisation. The splitting is explained in terms of the unimpeded growth of nucleated domains in the early period of the magnetic sweep.

Item Type:Article
Official URL/DOI:http://dx.doi.org/10.1016/S0304-8853(96)00444-1
Uncontrolled Keywords:Barkhausen noise; Demagnetisation factor
Divisions:Material Science and Technology
ID Code:510
Deposited By:Sahu A K
Deposited On:14 May 2010 11:47
Last Modified:14 Dec 2011 10:43
Related URLs:

Repository Staff Only: item control page