2014 Fiscal Year Final Research Report
Development of Soft-X-ray Dichroism Detecting ESR and Application to Surface-Interface Magnetism
| Project/Area Number |
25610086
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 磁性 / 表面 / XMCD / 強磁場 / ESR |
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| Outline of Final Research Achievements |
We have developed a new magnetization-detecting type Electron Spin Resonance equipment by combining soft-X-ray magnetic dichroism and microwave resonant-cavities. For the estimate of the absolute sensitivity, we have also assembled a SQUID-ESR-equipment and evaluated the absolute value of the magnetization reversal in on-resonance states. We have succeeded in the observation of the XMCD signal change at the resonance state of a Fe-polycrystalline thin film. The XMCD signal change is found to be smaller than the estimated bulk magnetization reversal and the influence of the surface effect and/or the sample oxidization are examined. It is also turned out that the modulation detection is needed in XMCD measurement to suppress the baseline fluctuation, which limit the sensitivity of the system.
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| Free Research Field |
磁性、磁気共鳴、強磁場物性
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