SELF-ORGANIZED CRITICALITY AND THE BARKHAUSEN EFFECT IN AMORPHOUS AND POLYCRYSTALLINE METALS
1993 ◽
Vol 07
(01n03)
◽
pp. 934-937
◽
Keyword(s):
An investigation of the possibility that the Barkhausen effect in amorphous and polycrystalline ferromagnets is an example of self-organized criticality is described. Since the theory of self-organized criticality was introduced by Bak, Tang, and Weisenfeld to explain the behavior of spatially extended, dissipative, dynamical systems the Barkhausen effect is a natural candidate for such a description. The data are consistent with self-organized critical behavior: the power spectral densities depend on frequency f as 1/fa and the distribution of pulse energies are well described by a power law analogous to the Gutenberg-Richter law for earthquakes. Alternative explanations for power law dependences are also presented.
Keyword(s):
2004 ◽
Vol 37
(42)
◽
pp. L523-L529
◽
1995 ◽
Vol 50
(9-10)
◽
pp. 739-740
◽
Keyword(s):
1999 ◽
Vol 09
(12)
◽
pp. 2249-2255
◽
2010 ◽
Vol 368
(1910)
◽
pp. 131-144
◽
2008 ◽
Vol 19
(07)
◽
pp. 1063-1067
◽
Keyword(s):