Comparison of experimental and numerical micromagnetic dynamics in coherent precessional switching and modal oscillations
Abstract
Spatiotemporally resolved experimental vector magnetometry is combined with time-domain numerical micromagnetic simulation to investigate two, precessional-based, dynamic processes in thin-film magnetic elements. Large angle (>180°), ultrafast, magnetization vector motions compare well between experiment and simulation and constitute a direct observation of nearly-ideal precessional switching. High-frequency spin-wave generation is inferred by apparent reduction in the magnetization vector length. Small angle (<1°) nonequilibrium modal oscillations in ferromagnetic resonance are compared and show considerable agreement in the long-wavelength magnetic spatial structure.
- Publication:
-
Physical Review B
- Pub Date:
- April 2002
- DOI:
- 10.1103/PhysRevB.65.140404
- Bibcode:
- 2002PhRvB..65n0404H
- Keywords:
-
- 75.50.Ss;
- 68.37.Ef;
- 77.80.Fm;
- 78.47.+p;
- Magnetic recording materials;
- Scanning tunneling microscopy;
- Switching phenomena;
- Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter