| Budget Amount *help |
¥100,230,000 (Direct Cost: ¥77,100,000、Indirect Cost: ¥23,130,000)
Fiscal Year 2015: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2014: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2013: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2012: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2011: ¥29,900,000 (Direct Cost: ¥23,000,000、Indirect Cost: ¥6,900,000)
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| Outline of Final Research Achievements |
Crystal structures of LPSO phases in the Mg-Al-Gd and Mg-Zn-Y systems have been determined by atomic-level structural analysis. The enrichment of Gd and Al (Zn and Y) atoms in LPSO phases in the Mg-Al-Gd (Mg-Zn-Y) system occurs in the four consecutive close-packed atomic layers by forming atomic clusters with the atomic arrangement of the L12-type. The in-plane arrangement of these L12 clusters is ordered for LPSO phases in the Mg-Al-Gd system, while for LPSO phases in the Mg-Zn-Y system, it changes from disordered to ordered as the Zn, Y concentration increases. These crystal structures based on the stacking of structural blocks containing the four-consecutive atomic layers enriched with Gd and Al (Zn and Y) atoms can be described crystallographically as order-disorder structures. Many polytypes can be formed depending on the number of atomic layers of structural blocks, and simplest stacking structures and their space groups can be assigned for each of them.
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