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Magnetization dynamics at elevated temperatures
- Publication Year :
- 2012
-
Abstract
- By using the quantum kinetic approach with the instantaneous local equilibrium approximation, we propose an equation that is capable of addressing magnetization dynamics for a wide range of temperatures. The equation reduces to the Landau-Lifshitz equation at low temperatures and to the paramagnetic Bloch equation at high temperatures. Near the Curie temperature, the magnetization reversal and dynamics depend on both transverse and longitudinal relaxations. We further include the stochastic fields in the dynamic equation in order to take into account fluctuation at high temperatures. Our proposed equation may be broadly used for modeling laser pump-probe experiments and heat assisted magnetic recording.
- Subjects :
- Physics
Magnetization dynamics
Range (particle radiation)
Condensed matter physics
Condensed Matter - Mesoscale and Nanoscale Physics
Demagnetizing field
FOS: Physical sciences
Condensed Matter Physics
Kinetic energy
01 natural sciences
Atomic and Molecular Physics, and Optics
010305 fluids & plasmas
Electronic, Optical and Magnetic Materials
Paramagnetism
Heat-assisted magnetic recording
Bloch equations
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
0103 physical sciences
010306 general physics
Quantum
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....2aa87446c560283504f91c3c51d1b07d