Fully controlled precessional switching of a macrospin in a cross-wire geometry
Ultrafast scanning Kerr microscopy measurements of half-precession-cycle, quasiballistic magnetization switching in a PermalloyTM macrospin are presented. The 20×7 µm2, 15-nm ellipse-shape...
Ultrafast scanning Kerr microscopy measurements of half-precession-cycle, quasiballistic magnetization switching in a PermalloyTM macrospin are presented. The 20×7 µm2, 15-nm ellipse-shape...
Nonlinear microscopic relaxation of uniform magnetization precession
Dynamic relaxation for nonlinear magnetization excitation is analyzed. For direct processes, such as magnon–electron scattering and two-magnon scattering, the relaxation rate is determined from t...
Dynamic relaxation for nonlinear magnetization excitation is analyzed. For direct processes, such as magnon–electron scattering and two-magnon scattering, the relaxation rate is determined from t...
Analytical solutions of Landau–Lifshitz equation for precessional switching
J. Appl. Phys. 93, 6909 (2003); doi:10.1063/1.1557278
Issue Date: 15 May 2003
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A rigorous analysis of the precessional switching dynamics in uniformly magnetized particles and films is presented. Magnetization dynamics are described by the Landau–Lifshitz equation and the precessional switching is realized by applying a field pulse orthogonal to the easy axis of the particle or the film. The analysis of the switching process is based on the explicit knowledge of two integrals of motion for the magnetization dynamics and leads to closed form analytical expressions for the magnetization in terms of Jacobi elliptic functions. It is shown that switching can occur only beyond a critical field threshold. The analytical solutions are used to predict the magnetization trajectory and the switching time under external field pulses of different amplitudes and durations. ©2003 American Institute of Physics.
| History: | Presented 12 November 2002 |
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http://link.aip.org/link/?JAPIAU/93/6909/1 |
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KEYWORDS and PACS
- 75.60.Jk
Magnetization reversal mechanisms - 75.50.Tt
Fine-particle magnetic systems; nanocrystalline materials - 75.70.Ak
Magnetic properties of monolayers and thin films - 75.40.Gb
Dynamic properties of magnetic materials including dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc - YEAR: 2003
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PUBLICATION DATA
0021-8979 (print)
1089-7550 (online)
AIP
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