Published January 1, 2025
| Version v1
Journal article
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Evaluation of exchange stiffness constant in iron garnet film using micromagnetic simulation
Creators
- 1. Shin Etsu Chem Co Ltd, 2-13-1 Isobe, Annaka, Gunma 3790195, Japan
- 2. Tohoku Univ, Res Inst Elect Commun, 2-1-1 Katahira,Aoba, Sendai, Miyagi 9808577, Japan
- 3. Toyohashi Univ Technol, 1-1 Hibarigaoka, Toyohashi, Aichi 4418580, Japan
- 4. Koc Univ, Elect & Elect Engn & Phys, TR-34450 Istanbul, Turkiye
Description
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 N & eacute;el-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.
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