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Updated: Mar 16, 2026
08:55
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
9.0K
Implementation of Two-Dimensional Polycrystalline Grains in Object Oriented Micromagnetic Framework.
J W Lau1, R D McMichael2, M J Donahue3
1Metallurgy Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
Summary
Researchers developed a new micromagnetic model for simulating nanoscale magnets, enhancing understanding of magnetic switching phenomena in polycrystalline grains using OOMMF software.
Area of Science:
- Materials Science
- Computational Physics
- Magnetism
Background:
- Accurate micromagnetic modeling is crucial for understanding magnetic switching in nanoscale materials.
- Existing models may lack the granularity needed for complex polycrystalline structures.
Purpose of the Study:
- To develop an advanced micromagnetic model for simulating two-dimensional polycrystalline grains.
- To enhance the Object Oriented Micromagnetic Framework (OOMMF) for greater simulation flexibility.
Main Methods:
- Implementation of polycrystalline grain simulation capabilities within OOMMF.
- Development of user-defined control over magnetocrystalline anisotropy and exchange coupling.
Main Results:
- Successful integration of 2D polycrystalline grain simulation into OOMMF.
- Enabled flexible determination of anisotropy and exchange coupling within and between grains.
Conclusions:
- The enhanced OOMMF provides a more accurate micromagnetic model for nanoscale magnets.
- Facilitates detailed study of magnetic switching phenomena in complex granular materials.
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