X-Ray Diffraction Studies on Magneto-Volume Effect and the First Order Phase Transition in Lu(Co_<1-x>Ga_x)_2 : Condensed Matter: Electronic Properties, etc.

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概要

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• The magneto-volume effect in Laves phase compound Lu(Co_<1-x>Ga_x)_2 has been studied by an X-ray diffraction technique. The temperature dependence of the volume change for the samples with 0.10 <__- x <__- 0.15 has been found to be proportional to the square of magnetization with the same coefficient of the magneto-volume coupling constant. For the sample with x = 0.10, the temperature induced first order transition from the cubic to the tetragonal structure has been observed. Above the Curie temperature, a discontinuous change of the lattice parameter is also observed by applying magnetic field. The results can be described by a spin fluctuation theory for itinerant electron metamagnets. The temperature and magnetic field induced first order phase transitions observed in the sample with x = 0.10 are characterized by the coexistence of two phases in a wide temperature or magnetic field range without an appreciable hysteresis.

• 社団法人日本物理学会の論文
• 2000-12-15

著者

• Saito H

  Department Of Materials Science Graduate School Of Engineering Tohoku University:(present)electrotec

• Saito Hidekazu

  Department Of Materials Science Faculty Of Engineering Tohoku University

• Tajima Keisuke

  Department Of Physics Faculty Of Science And Technology Keio University

• Fukamichi Kazuaki

  Department Of Aterials Science Graduate School Of Engineering Tohoku University

• Hayashi Kohki

  Department Of Physics Faculty Of Science And Technology Keio University

• Hayashi Kohki

  Department Of Physics Faculty Of Science And Technology Keio University:(present)nec Co.ltd.

• TAJIMIA Keisuke

  Department of Physics, Faculty of Science and Technology, Keio University

• Tajimia Keisuke

  Department Of Physics Faculty Of Science And Technology Keio University

• Tajima Keisuke

  Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• TAJIMA Keisuke

  Department of Applied Chemistry, School of Engineering, The University of Tokyo

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