| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
Magnetization behaviors of a Co/Pt layer and CoCrPt-SiO2 granular media were investigated by X-ray magnetic circular dichroism (XMCD) with focused hard X-ray in 100 nm scale. The samples were excited by spin-polarized current or magnetic field in GHz frequency range. XMCD measurement have revealed that the polarized Pt moment were strongly coupled with Co moment, indicating that XMCD signal of Pt can be used as a probe for magnetization dynamics measurement of those multilayer and alloys. Two-dimensional mapping measurement have revealed that the cluster size during microwave assisted switching in CoCrPt-SiO2 granular media strongly depends on the excitation frequency, and the size becomes smaller with increasing of frequency.
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