Evaluation of exchange stiffness constant in iron garnet film using micromagnetic simulation
Measurement of exchange stiffness constants (ESCs) is crucial for describing magnetization phenomena. Large-scale micromagnetic simulations (MMSs) are used to determine the ESC of iron garnet thin films exhibiting perpendicular magnetic anisotropy. The ESC determined by fitting the calculated domain periodicity with experimental data acquired through a polarized microscope is comparable to previously reported values. In addition, the simulations showed mixed-configuration domain wall (DW) structure with a large Néel–Bloch DW ratio. This study demonstrates the capability of MMS for evaluating ESCs while providing additional insights into DW physics, offering a facile approach for describing spin dynamics in magnetic garnets.
Authors
- H. Miyashita (ORCID: https://orcid.org/0009-0003-3298-661X)
- Mehmet C. Onbaşlı (ORCID: https://orcid.org/0000-0002-3554-7810)
- Mitsuteru Inoue (ORCID: https://orcid.org/0009-0001-3892-7210)
- Takumi Koguchi (ORCID: https://orcid.org/0009-0001-1654-4155)
- Taichi Goto (ORCID: https://orcid.org/0000-0002-0621-8196)
- K. Ishiyama (ORCID: https://orcid.org/0009-0008-3150-7644)
- Y. Nakamura (ORCID: https://orcid.org/0000-0002-5424-898X)
- Toshiaki Watanabe (ORCID: https://orcid.org/0009-0009-0990-8430)
Institutions
- Koç University (TR)
- Toyohashi University of Technology (JP)
- Tohoku University (JP)
- ShinEtsu Chemical (Japan) (JP)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-09-08
- DOI
- https://doi.org/10.1063/5.0283742
- Citations
- 2
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 2.49
Funders
- Türkiye Bilimsel ve Teknolojik Araştırma Kurumu
- Amada Foundation
- Japan Society for the Promotion of Science