2018 Fiscal Year Annual Research Report
Design and development of spin-torque-oscillator for microwave assisted magnetic recording
| Project/Area Number |
17K14802
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
S.Amin Hossein 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, 主任研究員 (10621758)
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Keywords | spin-torque-oscillator / Micromagnetic simulation / Microstructure analysis / Magnetic recording |
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| Outline of Annual Research Achievements |
spin-torque-oscillator (STO) was designed and developed for microwave assisted magnetic recording (MAMR), the next generation of recording technology with areal density>2Tb/in2. I have shown the importance of high spin polarized materials to be used as spin-injection-layer in mag-flip STO to reduce the current density required for the oscillation of STO. We have demonstrated this STO experimentally. I also proposed desired materials for a novel STO, all-in-plane STO that overcomes the thickness limitation (<20nm) of STO for MAMR. We could develop this device for the first time in the world and discussed its oscillation behavior. This unique teamwork had not only a great academic impact but also has attracted a great attention from media industry.
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