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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39010

    Title: Heavy-fermion behavior in CeAl2 nanoparticles
    Authors: Chen,YY;Yao,YD;Lee,TK;Liu,WC;Chang,HC;Lin,KY;Lin,YS;Wang,ZC;Li,WH
    Contributors: 物理研究所
    Date: 1999
    Issue Date: 2010-07-08 14:02:06 (UTC+8)
    Publisher: 中央大學
    Abstract: In order to examine the quantum size effects on the heavy-fermion behavior in CeAl2, we have performed measurements of the low-temperature specific heats for CeAl2 nanoparticles with average particle size 80 Angstrom for temperature down to 80mK. For 80 Angstrom - nanoparticles the magnitude of gamma of CeAl2 can be as high as 3600mJ/K-2 f.u. at T=80mK with TK approximate to 0.65K. Compared with the sharp anti-ferromagnetic order (T-N=3.8K) in bulk CeAl2 only a blurred peak at same temperatures is observed in CeAl2 nanoparticles. Due to the suppression of the long-range magnetic order by the limited geometric size and the less degeneracy of the density of states of conduction electrons D(epsilon(F)) the enhanced heavy-fermion behavior (in terms of gamma) and the disappearance of magnetic order in CeAl2 nanoparticles are attributed to the quantum size effects in nanoparticles. (C)1999 Acta Metallurgica Inc.
    Appears in Collections:[物理研究所] 期刊論文

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