MCD Study on Materials without Magnetic Order

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概要

• 論文の詳細を見る

• Core excited magnetic circular dichroism (MCD) signals have been measured on PrFe4P12 and CePd3 under the states without magnetic order. The inverse values of the MCD magnitudes have been plotted against temperatures to be compared with the inverse plots of the bulk susceptibility. It has been found on PrFe4P12 that the inverse of MCD magnitudes behaves like a material with local magnetic moments at high temperature region but behaves as if the local magnetic moments disappear at low temperature region with TK much higher than 10 K, while its bulk susceptibility is known to show a "ferromagnetic" behavior above 6 K. Those on CePd3 have been found to behave like a normal dilute Kondo alloy as if TK is around 20 K, which contradicts the known TK of 150 K and is in striking contrast to our former result on CeFe4P12. This result suggests that TK of a "coherent" Kondo material could be much higher than TK observed through "local" spin fluctuation due to some antiferromagnetic interaction between neighboring 4f moments.

• Physical Society of Japanの論文
• 2001-10-15

著者

• MURO Takayuki

  SPring-8

• SAITOH Yuji

  JAERI/SPring-8

• Obu Kenji

  Department Of Physics Tokyo Metropolitan University

• Shinoda Motoki

  Department Of Physics Tokyo Metropolitan University

• Ishii Hiroyoshi

  Department Of Physics Faculty Of Science Tokyo Metropolitan University

• Matsuda Tatsuma

  Department Of Physics Tokyo Metropolitan University

• Takayama Yasuhiro

  Department Of Physics Tokyo Metropolitan University

• Miyahara Tsuneaki

  Department Of Physics Tokyo Metropolitan University

• Hirose Masaaki

  Department Of Physics Tokyo Metropolitan University

• Maruyama Kennichi

  Department Of Physics Tokyo Metropolitan University

• Sato Hideyuki

  Department Of Applied Chemistry Faculty Of Science And Technology Keio University

• Muro Takayuki

  SPring-8, Kouto 1-1-1, Mikazuki-cho, Sayo-gun, Hyogo 679-5198

• SUGAWARA Hitoshi

  Department of Mathematical and Natural Sciences, Faculty of Integrated Arts and Sciences, The University of Tokushima

• Saitoh Yuji

  JAERI/SPring-8, Kouto 1-1-1, Mikazuki-cho, Sayo-gun, Hyogo 679-5198

• Ishii Hiroyoshi

  Department of Physics, Tokyo Metropolitan University, Minamiohsawa 1-1, Hachioji, Tokyo 192-0397

• Takayama Yasuhiro

  Department of Physics, Tokyo Metropolitan University, Minamiohsawa 1-1, Hachioji, Tokyo 192-0397

• Maruyama Kennichi

  Department of Physics, Tokyo Metropolitan University, Minamiohsawa 1-1, Hachioji, Tokyo 192-0397

• Hirose Masaaki

  Department of Physics, Tokyo Metropolitan University, Minamiohsawa 1-1, Hachioji, Tokyo 192-0397

• Miyahara Tsuneaki

  Department of Physics, Tokyo Metropolitan University, Minamiohsawa 1-1, Hachioji, Tokyo 192-0397

• Shinoda Motoki

  Department of Physics, Tokyo Metropolitan University, Minamiohsawa 1-1, Hachioji, Tokyo 192-0397

• Obu Kenji

  Department of Physics, Tokyo Metropolitan University, Minamiohsawa 1-1, Hachioji, Tokyo 192-0397

• Hirose Masaaki

  Department of Food Science and Nutrition, Nara Womens University

• Sugawara Hitoshi

  Department of General Internal Medicine, Omiya Medical Center, Jichi Medical University

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