| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Research Abstract |
Magneto-optical (MO) properties of stacked structures consisting of CoPt thin films and noble metal underlayers were investigated. An ideal square out-of-plane hysteresis loop with a large Kerr rotation was obtained in the [CoPt/ZnO/Ag] stacked films. Moreover, the influence of two-dimensional array structures on MO properties was investigated in perpendicular antiferromagnetically coupled CoPt stacked-films with ZnO optical interference layers. For the sample with a 50-nm ZnO layer, the anti-dot lattice with 200-nm diameter hole exhibited an increase in the residual Kerr rotation angle due to antiparallel magnetization alignment of the CoPt layers. On the other hand, the MO figure of merit for the anti-dot lattice was enhanced by inserting a 100-nm ZnO interference layer. This MO improvement is attributed to the effects of MO optical retardation and optical interference inside the stacked-films.
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