Magnetic Circular Dichroism of Eu, Gd, Tb, Dy, and Ho in the 4d-4f Excitation Region.

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  • Muto Sadatsugu
    Photon Factory, National Laboratory for High Energy Physics, Oho 1–1, Tsukuba–shi, Ibaraki 305
  • Park Serng–Yerl
    Photon Factory, National Laboratory for High Energy Physics, Oho 1–1, Tsukuba–shi, Ibaraki 305
  • Imada Shin
    Faculty of Engineering Science, Osaka University, Machikaneyama–cho 1–1, Toyonaka–shi, Osaka 560
  • Yamaguchi Katsuhiko
    Faculty of Engineering, Saitama University, Shimoohkubo 255, Urawa–shi, Saitama 338
  • Kagoshima Yasushi
    Photon Factory, National Laboratory for High Energy Physics, Oho 1–1, Tsukuba–shi, Ibaraki 305
  • Miyahara Tsuneaki
    Photon Factory, National Laboratory for High Energy Physics, Oho 1–1, Tsukuba–shi, Ibaraki 305

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Other Title
  • Magnetic Circular Dichroism of Eu Gd Tb
  • Magnetic Circular Dichroism of Eu, Gd, Tb, Dy, and Ho in the 4<i>d</i>-4<i>f</i>Excitation Region

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The magnetic circular dichroisms (MCD) in the photoabsorptions by Eu, Gd, Tb, Dy, and Ho thin films were measured in the 4d-4f excitation region. The extended MCD signals were observed except for Eu and Gd both in the lower and the higher photon energy regions with the opposite signs, indicating that the interference between the 4d-4f excitation and the 4f-ε l excitation is more dominant than the 4f-ε l potential barrier effect in heavy rare earths. The observed MCD data are in fair agreement with theoretical calculations except the intensity of the extended MCD and disappearance of some components of the multiplets.

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