Large Scale Finite-Element Simulation of Micromagnetic Thermal Noise
arXiv:1806.07683 · doi:10.1016/j.jmmm.2018.11.106
Abstract
An efficient method for the calculation of ferromagnetic resonant modes of magnetic structures is presented. Finite-element discretization allows flexible geometries and location dependent material parameters. The resonant modes can be used for a semi-analytical calculation of the power spectral density of the thermal white-noise, which is relevant for many sensor applications. The proposed method is validated by comparing the noise spectrum of a nano-disk with time-domain simulations.