Abstract
Magnetic dynamic processes for micromagnetic clusters with local disorder of crystal structure were simulated by pseudo-non-equilibrial Monte Carlo method. The magnetic field dependence of magnetization showed a little dip at zero magnetic fields. The dip becomes larger as the number of dislocations increase. Simulated Barkhausen noise at the dip was stronger than ordinal-simulated Barkhausen noise around coercivity. The snapshot of spins shows a magnetic fluctuation around dislocations. The result suggests a possibility of a new measurement with high sensitivity, to detect the deformation of micromagnetic clusters.
Original language | English |
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Pages (from-to) | 251-255 |
Number of pages | 5 |
Journal | Physica B: Condensed Matter |
Volume | 372 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2006 Feb 1 |
Keywords
- Barkhausen noise
- Magnetic fluctuation
- Magnetic hysteresis
- Micromagnetic clusters
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering