Magnetic circular dichroism of [Co/Pd] and [CoB/Pd] multilayered films |
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| Authors: | A. Agui A. Asahi J. Sayama M. Mizumaki M. Tanaka T. Osaka |
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| Affiliation: | 1. Synchrotron Radiation Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan;2. Department of Life Science & Medical Bio-Science, School of Advanced Science & Engineering, Faculty of Science & Engineering, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku, Tokyo 162-0041, Japan;3. Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan;4. Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan;5. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan |
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| Abstract: | Magnetic circular dichroism (MCD) and X-ray absorption spectra (XAS) at the Co L2,3-edge of [Co/Pd]20 and [CoB/Pd]20 multilayered films, which were fabricated at 260 °C with different magnetic layer thicknesses (δ), have been measured. The lineshapes of XAS–MCD show that the electronic state of Co 3d of the films hardly changes even when sputtered at higher temperatures. The expectation values of orbital and spin angular momentum (〈Lz〉 and 〈Sz〉) are estimated using the sum rule, and it is found that 〈Lz〉/〈Sz〉 in δ<0.5 nm is larger than that in δ>0.5 nm. |
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| Keywords: | Co/Pd multilayered film B-doped film Perpendicular magnetization Magnetic circular dichroism |
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