Large scale finite-element simulation of micromagnetic thermal noise

Author(s)
Florian Bruckner, Massimiliano d'Aquino, Claudio Serpico, Claas Abert, Christoph Vogler, Dieter Suess
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.

Organisation(s)
Physics of Functional Materials
External organisation(s)
Università degli Studi di Napoli "Parthenope", Università degli studi di Napoli Federico II
Journal
Journal of Magnetism and Magnetic Materials
Volume
475
Pages
408-414
No. of pages
7
ISSN
0304-8853
DOI
https://doi.org/10.1016/j.jmmm.2018.11.106
Publication date
04-2019
Peer reviewed
Yes
Austrian Fields of Science 2012
Magnetism, Materials physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/large-scale-finiteelement-simulation-of-micromagnetic-thermal-noise(b9345b6c-f63b-41cd-8fde-06c450060c89).html