2015 Fiscal Year Final Research Report
Advanced control of gigantic spin waves induced in ferrimagnetic thin films
| Project/Area Number |
26790076
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Quantum beam science
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| Research Institution | Japan Synchrotron Radiation Research Institute |
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Principal Investigator |
Ohkochi Takuo 公益財団法人高輝度光科学研究センター, 利用研究促進部門, 研究員 (00435596)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | フェリ磁性 / スピン波 / 光電子顕微鏡 / 時間分解 / フェムト秒レーザー |
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| Outline of Final Research Achievements |
It have been widely known that "magnetic-field-free" ultrafast magnetization reversals are realized by applying femtosecond laser pulses to ferrimagnetic GdFeCo thin films. The applicant had so far showed that remarkably giant magnetic waves can also be induced by applying similar method in certain situations. In this project, the applicant had made progress in theoretical and experimental elucidation of the mechanism of this giant spin wave phenomenon, as well as in instrumental upgrading such as stabilized laser beams and experiment system under microwave excitations for advanced control of the spin waves. General properties and findings on light-induced spin manipulations for ferrimagnets have been obtained in the experiments.
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| Free Research Field |
放射光科学
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