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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27864

    Title: Size-Induced Transition from Magnetic Ordering to Kondo Behavior in (Ce,AI) Compounds
    Authors: Chen, Yih-Sharng;Yao, Y. D.;Wang, chang-Ren;Li, W. H.;張經霖;Chang, Ching-Lin;Lee, T. K.;Hong, T. M.;Ho, Jui-Chi;Pan, S. F.
    Contributors: 淡江大學物理學系
    Date: 2000-05-22
    Issue Date: 2009-12-31 10:49:10 (UTC+8)
    Publisher: College Park: American Physical Society (APS)
    Abstract: Magnetic ordering and Kondo behavior coexist in three (Ce,Al)-based compounds: CeAl2, Ce3Al, and Ce3Al11. A common feature apparently independent of crystal structures also prevails in terms of the size-induced transition between these two magnetic phenomena. As the particle size is reduced to nanoscale, the specific heat anomaly associated with the magnetic ordering diminishes. Although the Kondo temperature also decreases, the entropy associated with Kondo anomaly exhibits a large increase. This results in an enhancement of the Kondo behavior and an increased coefficient γ of the linear term in specific heat. For example, in 80 Å CeAl2 the extrapolated r(0) reaches 9000mJmolCe−1K−2.
    Relation: Physical Review Letters 84(21), pp.4990-4993
    DOI: 10.1103/PhysRevLett.84.4990
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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