Dynamics of Barkhausen jumps in disordered ferromagnets

作者：Zheng, GP^*; Li, M; Zhang, J

来源：Journal of Applied Physics, 2002, 92(2): 883-888.

DOI：10.1063/1.1488249

Evolution of Barkhausen jumps during the magnetization reversal process in disordered magnetic material is investigated. Based on the magnetoelastic effect (DeltaE effect), we investigated the dynamics of Barkhausen jumps through an internal friction measurement of amorphous Fe-B-Mo ribbons. The DeltaE caused by the Barkhausen jump is found to have a power-law scaling relation with the driving rate of magnetic field. Using numerical simulation, dynamics of Barkhausen avalanches in a realistic spin-lattice model for a disordered ferromagnet is analyzed. The dynamic scaling and inhomogeneous behavior observed in both experiments and theoretical models are presented and discussed.

• 出版日期2002-7-15
• 单位中山大学