| Budget Amount *help |
¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2023: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2022: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2021: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2020: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
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| Outline of Final Research Achievements |
We developed the X-ray magnetic tomography technique at the synchrotron radiation facility SPring-8. This new experimental technique allowed non-destructive three-dimensional observation of the microscopic magnetic domain structure (distribution of N and S poles) inside bulk magnetic materials, clarifying the relationship between the magnetic domain structure and properties of the magnetic materials. Using X-ray magnetic tomography, we successfully visualized the theoretically predicted skyrmion strings and proved the presence of singularity points. The behavior of nucleation and magnetic domain propagation during the magnetization reversal process of neodymium-sintered magnets were directly observed, and the correlation with the microstructure was discussed.
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