| Budget Amount *help |
¥47,320,000 (Direct Cost: ¥36,400,000、Indirect Cost: ¥10,920,000)
Fiscal Year 2014: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Fiscal Year 2013: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2012: ¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
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| Outline of Final Research Achievements |
We have fabricated graphene nanomesh (GNM), which has honeycomb-like array of nanopores with low defects and low contamination, by non-lithographic method within reproducibility as high as over 70%. Controlling atomic structure of the pore edge to zigzag by critical temperature annealing resulted in realization of flat-band ferromagnetism. High-efficiency GNM magnet, which has the strength was obtained by HSQ resist treatment of this GNM and irradiating electron beam, because mono-hydrogenation of the edge dangling bond was realized through this process. TMR structure was realized by using this magnetic GNM as an electrode and TMR ratio over 20% was realized even at room temperature. These results open doors to rare-magnetic-element free magnets and spintronic devices.
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