Circularly polarized soft X-ray generation by Co/Pt thin film polarizer with perpendicular magnetic anisotropy |
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| Affiliation: | 1. Department of Physics, Chungbuk National University, Cheongju 28644, Chungbuk, South Korea;2. Research Institute for Nanoscale Science and Technology, Chungbuk National University, Cheongju 28644, Chungbuk, South Korea;3. Department of Materials Science, Chungnam National University, Daejeon 34134, South Korea;4. Graduate School of Energy Science and Technology, Chungnam National University, Daejeon 34134, South Korea;5. Pohang Accelerator Laboratory, Pohang 37673, South Korea;6. Center for Nanometrology, Korea Research Institute of Standards and Science, Daejeon 34113, South Korea |
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| Abstract: | We have experimentally demonstrated circular polarization generation from linear polarized soft X-ray at synchrotron by adopting a thin magnetic film polarizer. Polarizer is composed of Co/Pt multilayer with a perpendicular magnetic anisotropy, which allows us to easily accommodate without needing any tilting angle into the measurement setup since the circular polarization is generated for the X-ray with normal incidence and transmission. Generated circular polarization is examined by observing magnetic domain features based on the X-ray magnetic circular dichroism, where ∼11% of circular component is estimated compared to the case of full circular polarization. |
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| Keywords: | X-ray polarization Magnetic film polarizer Magnetic domain |
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