| Budget Amount *help |
¥20,020,000 (Direct Cost: ¥15,400,000、Indirect Cost: ¥4,620,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2013: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
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| Outline of Final Research Achievements |
Crystal and magnetic structure in the ferroelectric phase of multiferroic RMn2O5 (R=rare-earth) has been clarified by a complementary use of neutron as well as synchrotron X-ray diffraction. Extremely high precision measurement of diffraction intensity has been developed and applied to synchrotron X-ray diffraction experiment. By this method, crystal symmetry in the ferroelectric phase of RMn2O5 system was firstly revealed. We have also firstly discovered the magnetic order of Sm and Mn magnetic moment in SmMn2O5 by resonant X-ray magnetic scattering. The proposed magnetic structure of SmMn2O5 suggests that there exists novel mechanism of magnetically induced ferroelectricity, which has not been proposed experimentally nor theoretically so far.
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