Modeling the Ferromagnetic Resonance Response of a Magnetite Nanocrystal Using Both Mathematical First Principles and Ubermag Software
Abstract
Magnetic nanoparticles exposed to radio-frequency (RF) fields have a wide variety of uses. A magnetic nanoparticle called magnetite nanocrystal (iron oxide - Fe3O4) is showing promise in the following industries: semiconductor, medical, electronics ,criminal forensics, and civil infrastructure. RF modeling is required to effectively implement these magnetite nanocrystals for both present and future applications. Prior work has performed analysis at low frequencies (kilohertz to megahertz) and established models easily accessible and free for researchers. However, easily accessible and free models for the gigahertz spectra are not available. This technical paper addresses these issues by demonstrating both a first principles model and the use of a finite difference time domain (FDTD) code called Ubermag that reproduces experimental results for the RF response of magnetite nanocrystals in the gigahertz region. RF engineers can use these models when designing magneto-optic sensors using magnetic nanocrystals, optimizing the material parameters when designing magnetic nanomaterials for de-icing applications, RF curing of polymer, and any other applications that takes advantage of the magnetic nanocrystals magnetic response in the gigahertz spectra.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 17, 2022
- Accession Number
- AD1176535
Entities
People
- Michael Sherburne
- Vladimir L. Safonov
Organizations
- Air Force Research Laboratory
- Azimuth Corporation