Attempt frequency of magnetization in nanomagnets with thin-film geometry

TL;DR

This paper investigates how the potential landscape influences the attempt frequency of magnetization in thin-film nanomagnets by combining numerical simulations of the stochastic Landau-Lifshitz-Gilbert equation with theoretical predictions, finding excellent agreement.

Contribution

It provides a detailed comparison between numerical estimates and theoretical predictions for the attempt frequency in thin-film nanomagnets, confirming the validity of the Neel-Brown model.

Findings

Numerical estimates match theoretical predictions for the universal case.

The potential landscape significantly affects the magnetization attempt frequency.

The study validates the use of the Fokker-Planck equation for modeling these systems.

Abstract

Solving the stochastic Landau-Lifshitz-Gilbert equation numerically, we investigate the effect of the potential landscape on the attempt frequency of magnetization in nanomagnets with the thin-film geometry. Numerical estimates of the attempt frequency are analyzed in comparison with theoretical predictions from the Fokker-Planck equation for the Neel-Brown model. It is found that for a nanomagnet with the thin-film geometry, theoretically predicted values for the universal case are in excellent agreement with numerical estimates.