| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
We succeeded to form quantum wires with quantum properties embedded in a solid oxide crystal.
In this work, MgO bicrystal symmetrical tilt GBs were used as model system. The bicrystals were fabricated by joining two MgO single crystal blocks (including residual impurities) under high temperature.
Analyses of microstructure near the GBs revealed specific periodical structures. The atomic-resolution EELS elemental mapping revealed impurities segregation only at a coincidence site lattice (CSL) boundary which shows good lattice matching. The CSL GB showed that the Ca atoms are localized at the GB mirror plane, but Ti atoms exist at the neighboring sites (layer) of Ca sites. The detailed analysis and the theoretical calculation also revealed that co-existence and interaction of Ca and Ti atoms near the MgO GB with specific bonding angle might provide conductive Ti channels. By using dislocation technology, a quantum wire with quantum properties can be self-organized.
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