Magnetic,Transport and Thermal Properties of Ce_2 Cu_x Al_<17-x>
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概要
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To clarify the heavy fermion properties of ThnZnnv-type C(G2CU1.Al17 .(6.75< x< 8.25),we have systematically measured the electrical resistivity including the utuagnetoresistance, themagnetic susceptibility and the specific heat. In the electrical resistivity measurement for x : 8.0,no magnetic order was clearly observed down to 60 mK and the naagnetic contribution to thespecific heat, Cm/T, reached extrernely large values of C../T ::: 3.0 (at 0.7 K), 2.4 (at 0.8 K)and 1.7 J/K'znol-Ce (at 1.4 K) for x : 8.0, 7.5 and 7.0, respectively. A T' dependence of theelectrical resistivity was also observed below 0.4 K f'or x : 8,0 and below 0,6 K for x = 7.0 and7.5, indicating that C02CU.A117 . is a coherent heavy ferrnion system. However, the possibilityof the coexistence of short-range magnetic order resulting from the random distribution of Cuand Al could not be entirely excltxded. We discuss the large C../T values ?xt temperaturesclose to O K in terms of the x dependence of the Kondo tempertrture, T5;, and also discuss thedifferences between the magnetic properties of heavy fermion compounds such as CeCu? andthose of CezCu.Al)7 ..
- 社団法人日本物理学会の論文
- 1997-05-15
著者
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Nishikawa Takashi
Department Of Physics Division Of Material Science Nagoya University:crest Japan Science And Technol
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IDO Hideaki
Department of Applied Physics and Informatics, Faculty of Engineering, Tohoku Gakuin University
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NISHIOKA Takashi
Department of Material Science, Faculty of Science, Kochi University
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Nishikawa Takashi
Department Of Physics Faculty Of Science Nagoya University
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Nishioka Takashi
Faculty Of Science Kochi University
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Nishioka Takashi
Department Of Materials Science Faculty Of Science Kochi University
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Nishioka Takashi
Department Of Physics Faculty Of Science Nagoya University
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Nishioka Takashi
Department Of Physics Nagoya University
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Nishioka Takashi
Department Of Physics Graduate School Of Science Nagoya University
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KONTANI Masaaki
Department of Physics,Faculty of Science,Nagoya University
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Ido Hiroshi
Department Of Physics Nagoya University
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Nishioka Takashi
Department Of Applied Physics Graduate School Of Engineering Osaka City University
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Nishioka T
Department Of Materials Science Faculty Of Science Kochi University
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Kontani M
Department Of Physics Graduate School Of Science Nagoya University
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Kontani Masaaki
Department Of Physics Faculty Of Science Nagoya University
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Ido Hiroshi
Department of Applied Physics and Informatics, Faculty of Engineering, Tohoku Gakuin University
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