Static Correlation and Dynamical Properties of Tb^<3+>-moments in Tb_2Ti_2O_7 : Neutron Scattering Study

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概要

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• Static and dynamical properties of the magnetic moment system of pyrochlore compound Tb_2Ti_2O_7 with strong magnetic frustration, have been investigated down to the temperature T=0.4 K by neutron scattering on a single crystal sample. The scattering vector (Q)-dependence of the magnetic scattering intensity becomes appreciable with decreasing T at around 30 K, indicating the development of the magnetic correlation. From the observed energy profiles, the elastic, quasi elastic and inelastic components have been separately obtained. The quasi elastic component corresponds to the diffusive motion of the magnetic moments within the lowest states, which are formed of the lowest energy levels of Tb^<3+> ions. Magnetic correlation pattern which can roughly reproduce the Q-dependence of the scattering intensities of the elastic and quasi elastic component is discussed based on the trial calculations for clusters of 7 moments belonging to two corner-sharing tetrahedra. A possible origin of the glassy state, which develops at around 1.5 K with decreasing T is discussed.

• 社団法人日本物理学会の論文
• 2002-02-15

著者

• HARASHINA Hiroshi

  Department of Physics,Division of Material Science,Nagoya University

• SATO Masatoshi

  Department of Physics,Division of Material Science,Nagoya University

• KAKURAI Kazuhisa

  CREST,Japan Science and Technology Corporation (JST)

• KADOWAKI Hiroaki

  Department of Physics, Tokyo Metropolitan University

• 原科 浩

  教養部物理学教室

• Kato Masaya

  Department Of Physics Division Of Material Science Nagoya University:crest Japan Science And Technol

• ITO Masafumi

  Department of Pathology, Japanese Red Cross Nagoya Daiichi Hospital

• Ito Masafumi

  Department Of Physics Division Of Material Science Nagoya University

• Kato Masatune

  Department Of Physics Faculty Of Science Hiroshima University

• Masaki Kato

  Department Of Chemistry Graduate School Of Science Kyoto University

• Kanada Masaki

  Department Of Physics Division Of Material Science Nagoya University

• Kobayashi Hisao

  Department Of Physics Graduate School Of Science Tohoku University

• Kodama Katsuaki

  Department Of Physics Division Of Material Science Nagoya University:crest Japan Science And Technol

• Kodama Katsuaki

  Department Of Physics Division Of Material Science Nagoya University

• YASUI Yukio

  Department of Physics, Division of Material Science, Nagoya University

• OKUMURA Hajime

  Neutron Scattering Laboratory, ISSP, The University of Tokyo

• Kimata Motoi

  The Graduate School Of Science And Technology Kobe University

• Kato M

  Toyohashi Univ. Technol. Aichi Jpn

• Kodama Masafumi

  The Graduate School Of Science And Technology Kobe University

• Kadowaki H

  Tokyo Metroporitan Univ. Tokyo

• Kadowaki Hiroaki

  The Institute For Soild State Physics The University Of Tokyo

• Kadowaki Hiroaki

  Department Of Physics Tokyo Metroporitan University

• Kamimura Hirohiko

  Department Of Materials Science Hiroshima University

• Kawanaka H

  National Inst. Advanced Industrial Sci. And Technol. Ibaraki Jpn

• Okumura Hajime

  National Institute Of Advanced Industrial Science And Technology

• Okumura H

  National Institute Of Advanced Industrial Science And Technology Power Electronics Research Center

• Okumura H

  National Inst. Advanced Industrial Sci. And Technol. Ibaraki Jpn

• Okumura H

  Neutron Scattering Laboratory Issp The University Of Tokyo

• Kato M

  Nagoya Univ. Nagoya Jpn

• Kato Mayumi

  Institute For Solid State Physics University Of Tokyo

• Kato Hideyuki

  Department Of Physics Faculty Of Science Hokkaido University

• Kadowaki Hiroaki

  The Institute For Solid State Physics The University Of Tokyo

• Kasai Mayumi

  Department Of Physics Division Of Material Science Nagoya University

• Kato M

  Institute For Solid State Physics University Of Tokyo

• YOSHIDA Yukihiro

  Research Institute, Meijo University

• Ito Masafumi

  Department Of Electrical And Electronic Engineering Faculty Of Science And Technology Meijo Universi

• Kadowaki Hiroaki

  Department Of Physics Graduate School Of Science Tokyo Metropolitan University

• Sato Masatoshi

  Department Of Electrical And Electronics Engineering Sophia University

• Kato Masaki

  Department Of Molecular Science And Technology Faculty Of Engineering Doshisha University

• Yoshida Yukihiro

  Research Institute Meijo University

• Sato Masatoshi

  Department Of Agro-environmental Science Obihiro University Of Agriculture And Veterinary Medicine

• Yasui Yukio

  Department Of Physics Division Of Material Science Nagoya University

• Kakuta Kazuyuki

  Department Of Physics Aoyama-gakuin University

• Ito Masafumi

  Department of Physics, Division of Material Science, Nagoya University

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