Power-law scaling behavior in Barkhausen avalanches of ferromagnetic thin films

Cited 9 time in webofscience Cited 0 time in scopus
  • Hit : 307
  • Download : 116
We report direct domain observations of Barkhausen avalanches at criticality in Co and MnAs thin films investigated by means of a magneto-optical microscope magnetometer, capable of time-resolved domain observation in real time. Through a statistical analysis of the fluctuating size of Barkhausen jump from numerous repetitive experiments for each sample, the distribution of Barkhausen jump size is found to exhibit a power-law scaling behavior with the critical exponent of similar to 1.33 in both systems. This value is consistent with the two-dimensional prediction of a theoretical model proposed by Cizeau et al. [Phys. Rev. Lett. 79 (1997) 4669]. (c) 2006 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2007-03
Language
English
Article Type
Article
Keywords

SELF-ORGANIZED CRITICALITY; DOMAIN-WALL; MAGNETIZATION REVERSAL; DYNAMICS; NOISE; TRANSITION; MOTION

Citation

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.310, pp.2599 - 2603

ISSN
0304-8853
DOI
10.1016/j.jmmm.2006.11.041
URI
http://hdl.handle.net/10203/13964
Appears in Collection
RIMS Journal Papers
Files in This Item
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 9 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0