| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
Magnetic and crystal structures of the room-temperature ferrimagnet Sr3YCo4O10.5 have been investigated by complementarily use of neutron and synchrotron x-ray diffraction measurements. Powder X-ray diffraction experiments clarified that the ferrimagnetic phase has a triclinic structure (A-1 or A1) with a 4√2a×2√2a×4a supercell, where a is the lattice parameter of the primitive perovskite unit cell. Based on the crystal structure, the magnetic structure was estimated by using ferrimagnetic ordering model. Structural change associated with the high-spin and intermediate-spin state ordering was also observed by single-crystal X-ray structural analysis. The peculiar orbital and spin state ordering in the room-temperature ferrimagnet Sr3YCo4O10.5 was thus revealed.
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