2013 Fiscal Year Final Research Report
Perpendicular magnetic anisotropy enhanced by tuning electronic structure of organic-semiconductor/metallic-magnet interface
| Project/Area Number |
24750120
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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 |
Functional materials chemistry
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| Research Institution | Tohoku University |
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Principal Investigator |
ZHANG Xianmin 東北大学, 原子分子材料科学高等研究機構, 助教 (60580347)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 電気・磁気的機能 / トンネル接合 |
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| Research Abstract |
We have studied the effect of molecules/magnetic materials interface interactions on magnetic properties, such as coercivity, magnetization and so on. Importantly, it was found that the coercivity of Co film was 40, 30, 15 and 640 Oe when deposited on C60, Alq3, and Rubrene molecular films, respectively. This reflects the different electronic couplings at the interface of ferromagnetic metal with different molecules. Based on these results, we developed the organic spin valve device and obtained one of the highest magnetoresistance ratio (5% for C60 and 8% for Alq3 based spin valve) at room temperature reported so far.
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