Antiferroquadrupolar Ordering in DyB_2C_2 Studied by ^<161>Dy Mossbauer Spectroscopy : Condensed Matter: Electronic Properties, etc.

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概要

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• ^161Dy Mossbauer effects were measured on the tetragonal antiferroquadrupolar ordered compound DyB_2C_2. In the magnetic phase below T_c = 15.3 K, the Mossbauer spectra are interpreted well by a single set of hyperfine parameters which gives the Dy magnetic moment of 9.0μ_B. The hyperfine field anomalously decreases below T_c as temperature decreases, which can be interpreted as symmetry frustration between antiferromagnetic and antiferroquadrupolar interactions acting on Dy^<3+> ions. Reflecting the 4f electronic state in which two Kramers doublets locate with a low-energy separation, the spectra in the antiferroquadrupolar ordered phase and paramagnetic phase are complicated and cannot be well analyzed by the two-level relaxation model with a single set of hyperfine parameters, although it is supposed that the Dy electronic state is one type.

• 社団法人日本物理学会の論文
• 2000-07-15

著者

• INDOH Kentaro

  Institute for Materials Research, Tohoku University

• YAMAUCHI Hiroki

  Institute for Materials Research, Tohoku University

• YAMAGUCHI Yasuo

  Institute for Materials Research, Tohoku University

• ONODERA Hideya

  Institute for Materials Research, Tohoku University

• Kobayashi Hisao

  Department Of Physics Graduate School Of Science Tohoku University

• Yamaguchi Y

  Tohoku Univ. Sendai

• Yamaguchi Y

  Kumamoto Techno Res. Park Kumamoto Jpn

• Yamauchi H

  Istec Tokyo Jpn

• Yamauchi H

  Superconductivity Research Laboratory Istec

• Yamauchi Hisao

  Superconductivity Research Laboratory Istec:(present Address)research Laboratory Of Engineering Mate

• Ido K

  Institute For Materials Research Tohoku University:(present Office)shlumberger K.k.

• Onodera Hideya

  Institute For Materials Research

• Yamamoto H

  The Research Institute For Iron Steel And Other Metals

• Yamamoto Hisao

  The Research Institute For Iron Steel And Other Metals

• Yamaguchi Yasuo

  Institute For Materials Research Tohoku University

• Yamauchi H

  Institute For Materials Research Tohoku University:(present Office)neutron Science Research Center

• Yamaguchi Y

  Central Workshop Osaka University

• Kadowaki H

  Tokyo Metroporitan Univ. Tokyo

• Kadowaki Hiroaki

  Department Of Physics Tokyo Metroporitan University

• Ido Kaihei

  Institute For Materials Research Tohoku University:(present Address)fuji Xerox Dpsc Research And Dev

• Kobayashi H

  Tohoku Univ. Sendai‐shi Jpn

• Kobayashi H

  Inst. Molecular Sci. Aichi

• Kobayashi Hisao

  Department Of Physics Tohoku University

• Kamimura Hirohiko

  Department Of Materials Science Hiroshima University

• Yamauchi Hiroki

  Institute For Materials Research Tohoku University:(present Office)neutron Science Research Center

• Kato Hideyuki

  Department Of Physics Faculty Of Science Hokkaido University

• Yamamoto H

  Department Of Energy Engineering And Science Nagoya University

• Indoh K

  Institute For Materials Research Tohoku University:(present Office)shlumberger K.k.

• Kurai Hiroyuki

  Department Of Organic And Polymeric Materials Tokyo Institute Of Technology

• Yamamoto H

  Univ. Tokyo Tokyo

• Yamamoto Hiroshi

  Department Of Energy Engineering And Science Nagoya University

• Kobayashi Hisao

  Department of Physics, Tohoku University

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