Multiscale Modeling of 3-D Electromagnetic Fields With Magnetization Dynamics

Abstract

Multiphysics simulation of Maxwell’s and Landau–Lifshitz–Gilbert equations are performed to solve electromagnetic fields by considering the dynamics of magnetization. These equations are discretized, and the time-domain responses are computed using a finite-difference time-domain scheme. This study focuses on the acceleration of multiphysics simulations in terms of the multiscale modeling of the interaction between electromagnetic fields and magnetization. A nanoscale magnetic film is conducted to develop a method for measuring the magnetic properties using the near field of the magnetic film.

Keywords

• Finite-difference time-domain (FDTD) scheme
• Landau–Lifshitz–Gilbert (LLG) equation
• multiphysics simulation
• multiscale modeling