Time-dependent fields and anisotropy dominated magnetic media
K. Rivkin, W. Saslow, J. Ketterson
TL;DR
This paper investigates the dynamic behavior of anisotropy-dominated magnetic nanoparticles under external RF fields, focusing on steady states, stability, and optimal conditions for magnetization switching using a dipole approximation.
Contribution
It introduces a model analyzing time-dependent RF fields on magnetic nanoparticles, highlighting steady state oscillations and conditions for effective magnetization switching.
Findings
Identification of steady state oscillations and their stability.
Analysis of time-dependent RF frequency for optimal switching.
Insights into magnetic behavior under anisotropy dominance.
Abstract
We use a single dipole approximation to analyze the behavior of anisotropy-dominated magnetic nanoparticles subjected to an external r.f. field. We identify the steady state oscillations and analyze their stability. We also analyze the case when the external r.f. field has a time-dependent frequency which insures the most effective switching of the magnetization.
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