Direct observation of giant Barkhausen jumps in magnetic microwires

Chizhik, A.; Stupakiewicz, A.; Maziewski, A.; Zhukov, A.; Gonzalez, J.; Blanco, J. M.
July 2010
Applied Physics Letters;7/5/2010, Vol. 97 Issue 1, p012502
Academic Journal
Magnetization reversal induced by a circular magnetic field has been studied using the magneto-optical Kerr effect in magnetic microwires. The visualization of the classical effect of a giant Barkhausen jump is reported in a magnetic microwire. It was directly confirmed that the surface giant Barkhausen jump consists of the nucleation of a single circular domain followed by the long distance quick motion of the solitary circular domain walls.


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