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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/17474


    Title: Magnetic anomalies and spin-glass-like behavior in Ce2CuGe6
    Authors: 呂正中
    Keywords: Kondo lattice;Spin glass;X-ray absorption spectrum
    Date: 2011-08
    Issue Date: 2012-09-10 16:32:35 (UTC+8)
    Abstract: A Ce-based intermetallic compound Ce2CuGe6 and its La analogue La2CuGe6 were synthesized and examined by X-ray powder diffraction, electrical resistivity, magnetic susceptibility, X-ray absorption spectrum and specificheat measurements. The results reveal that Ce2CuGe6 is an antiferromagnetic Kondo-lattice compound with TN ∼ 15 K. The effective moment deduced from paramagnetic region is 2.58 μB per cerium ion, which is close to localized Ce3+ free ion in 2F5/2 state. X-ray absorption measurement also precluded the existence of an intermediate valence state. The magnetic entropy calculated from heat capacity specific-heat measurement suggested a doublet ground state. In addition, we also observed a spin-glass-like behavior in this material. The spin-glass-like behavior might be due to the complex interplay between magnetic interactions.
    Relation: Journal of Superconductivity and Novel Magnetism, 24(6), 1991-1995
    Appears in Collections:[機械工程系所] 期刊論文

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