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Stiff modes in spinvalve simulations with OOMMF.
Spyridon Mitropoulos1, Vassilis Tsiantos2, Kyriakos Ovaliadis2
1Department of Computer and Informatics Engineering, TEI of Eastern Macedonia and Thrace, Kavala, Greece.
Physica. B, Condensed Matter
|October 22, 2020
Summary
Micromagnetic simulations of spin valves reveal stiff modes. Implicit numerical methods, like Backward Differentiation Formulae (BDF), are more effective than explicit methods for these dynamic simulations.
Area of Science:
- Computational physics
- Materials science
- Magnetism
Background:
- Micromagnetic simulations are crucial for understanding magnetic materials.
- Software employs various numerical techniques to solve differential equations for dynamic simulations.
Purpose of the Study:
- To investigate spin valve simulations using micromagnetic modeling.
- To evaluate the effectiveness of different numerical methods for stiff systems.
Main Methods:
- Utilized micromagnetic simulations.
- Compared explicit numerical methods (Euler, Runge-Kutta, Adams) with implicit methods (Backward Differentiation Formulae - BDF).
Main Results:
- Spin valve systems exhibit stiff modes.
- Implicit methods, specifically BDF, demonstrated superior effectiveness in handling these stiff modes compared to explicit methods.
Conclusions:
- Implicit numerical methods are more suitable for dynamic micromagnetic simulations of spin valves with stiff modes.
- The choice of numerical method significantly impacts simulation efficiency and accuracy for such systems.
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