Spin-Liquid to Spin-Glass Transition in Y (Sc)(Mn_<1-x>Al_x)_2 : Polarized Neutron Scattering Study

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概要

• 論文の詳細を見る

• The scattering of polarized neutrons has been measured in order to study the spin dynamicsin Y0.97SC0.03MIl2 and Y0.97SCO.O3(M11O.9Al0.1)2. A large magnetic scattering peak observed at-1 .around Q : 1.6 A xnducates the existence of strong antiferromagnetic spin fluctuations. Theenergy and Q spectra obtained at 290 K exhibit nearly the sanue profiles for both samples, whilethose obtained at low temperatures are quite different; for Y(SC)M112 the intensity and the en-ergy width decrease only slightly with decreasing temperature and the intrinsic width remainsfinite (27 : 20 :E 5meV) at the lowest temperature (IOK), whereas for Y(SC)(MIl0.9Al0.1)2,the intensxty increases rapidly due to narrowing of the energy spectrum to the resolution limit(2T... : 5.8 men) at 10 K, and instead, diffuse scattering was clearly observed at positions corre-sponding to the magnetic Bragg peaks of YMIl2, implying a slowing down of spin fluctuations andthe presence of short range magnetic order at the low temperature. These results are discussedin terms of a spin-liquid to spin-glass transition caused by Al stubstitution.

• 社団法人日本物理学会の論文
• 1996-09-15

著者

• Nishi Masakazu

  Neutron Scattering Laboratory Issp University Of Tokyo

• Nishi M

  Neutron Scattering Laboratory Issp University Of Tokyo

• Nishi Masakazu

  Neutron Scattering Laboratory Institute For Solid State Physics The University Of Tokyo

• Nishi Masakazu

  Univ. Tokyo Chiba Jpn

• Nishi Masakazu

  Institute For Solid State Phrsics University Of Tokyo

• Nakamura Hatsuo

  Faculty Of Engineering Osaka Electro-communication University

• 中村 裕之

  Graduate School Of Material Science University Of Hyogo

• SHIGA Masayuki

  Department of Materials Science and Engineering, Kyoto University

• NAKAMURA Hiroyuki

  Department of Materials Science and Engineering, Kyoto University

• TAKAYANAGI Fumikazu

  Department of Materials Science and Engineering,Kyoto University

• NISHI Masakazu

  Newtron Scattering Laboratory ISSP,University of Tokyo

• KAKURAI Kazuhisa

  Newtron Scattering Laboratory ISSP,University of Tokyo

• Nishi Masakazu

  Issp University Of Tokyo

• Shiga Masayuki

  Department Of Material Science And Engineering Kyoto University

• KAKURAI Kazuhisa

  Japan Atomic Energy Agency

• Nishi Masakazu

  Neutron Scattering Laboratory Issp The University Of Tokyo

• Shiga Masayuki

  Spring-8

• Kodama Katsuaki

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

• Kakurai Kazuhisa

  Neutron Scattering Laboratory Institute For Solid State Physics The University Of Tokyo

• Nakamura H

  Univ. Tokyo

• Nakamura H

  Institute For Protein Research Osaka University

• NISHI Masato

  Department of Applied Physics,Faculty of Engineering,Hiroshima Univershity

• Nakamura Hiroyuki

  Department Of Dermatology Hokkaido University Graduate School Of Medicine

• Takayanagi Fumikazu

  Department Of Materials Science And Engineering Kyoto University

• Nakamura Hiroyuki

  Department Of Chemistry Graduate School Of Science Tohoku University

• Nakamura Hiroyuki

  Department Of Biochemistry Osaka Medical Center For Cancer And Cardiovascular Diseases

• Kakuta Kazuyuki

  Department Of Physics Aoyama-gakuin University

• Nakamura Hiroyuki

  Department of Advanced Materials, University of Tokyo, Kashiwa, Chiba 277-8561

• NISHI Masakazu

  Institute for Solid State Physics, The University of Tokyo

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