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Today in Magnetization Dynamics: The ferromagnetic resonance phenomenon

Diagram showing different time scales characteristic of various types of magnetization dynamics

The ferromagnetic resonance phenomenon is the basis of an experimental technique that measures the precessional motion of the magnetization vector of a ferromagnet in an external static magnetic field. This experimental technique is a powerful tool for analyzing the magnetic properties of ferromagnets and allows the determination of anisotropy constants, see, e.g.,1. Knowledge of these constants, in turn, enables the determination of the sample’s spatial distribution of the magnetic free energy at resonance.

Source - #Science