Hysteresis loops and Magnetic Barkhausen Noise in a single crystal a-iron containing a nonmagnetic particle were simulated based on the Laudau-Lifshitz-Gilbert equation. The analyses of domain morphologies and hysteresis loops show that reversal magnetization process is control by nucleation of reversed domains at nonmagnetic particle when the particle size reaches a particle value. In such a situation, the value of nucleation field is determined by the size of nonmagnetic particles, and moreover, coercive field and Magnetic Barkhausen Noise signal are strongly affected by the nucleation field of reversed domains.
Revised: December 9, 2015 |
Published: September 25, 2015
Citation
Li Y., B. Xu, S.Y. Hu, Y. Li, Q. Li, and W. Liu. 2015.Simulation of magnetic hysteresis loops and magnetic Barkhausen noise of a-iron containing nonmagnetic particles.AIP Advances 5, no. 7:Article No. 077168.PNNL-SA-113266.doi:10.1063/1.4927548