| Budget Amount *help |
¥29,900,000 (Direct Cost: ¥23,000,000、Indirect Cost: ¥6,900,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2012: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2011: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
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| Research Abstract |
A cubic perovskite SrFeO3 has been known for long as a rare oxide showing metallic conductivity and helimagnetic ordering, which can be a potential system hosting a topologically new phase such as a skyrmion lattice phase. In this study, we have for the first time succeeded in growing large single crystals of SrFeO3 and the related compounds by combining floating zone method and a high pressure technique. Based on the magnetic, resistivity, and Hall resistivity measurements, we have established the magnetic phase diagram containing a rich variety of novel helimagnetic phases. To study these phases in detail, we have performed polarized neutron diffraction measurements under magnetic field, and revealed that this is the novel multiple-Q helimagnetic system, whose propagation vectors are along the <111> equivalents.
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