TY - JOUR
T1 - Evolution from intermediate-valence to antiferromagnetic Kondo-lattice behavior in CeNi(GexSi1-x)2
AU - Lu, J. J.
AU - Lee, M. K.
AU - Jang, L. Y.
AU - Tien, C.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/7
Y1 - 2005/7
N2 - A cerium-based intermetallic compound series CeNi(GexSi 1-x)2 (x=0, 0.2, 0.4, 0.5, 0.6, 0.8, 1.0) were synthesized. Among the compounds, CeNiSi2 is an intermediate-valence compound, while CeNiGe2 is a Kondo-lattice with a two-step antiferromagnetic phase transition. In this work, X-ray powder diffraction, transport, magnetic and thermal measurements, as well as Ce-LIII spectroscopy are presented in order to study the crossover from non-magnetic intermediate-valance regime to antiferromagnetic Kondo-lattice regime in the CeNi(GexSi1-x)2 series. Increasing Ge concentration will depress the hybridization between 4f electrons and conducting electrons and enhance the RKKY interaction, which eventually drive the system to a magnetically ordered state.
AB - A cerium-based intermetallic compound series CeNi(GexSi 1-x)2 (x=0, 0.2, 0.4, 0.5, 0.6, 0.8, 1.0) were synthesized. Among the compounds, CeNiSi2 is an intermediate-valence compound, while CeNiGe2 is a Kondo-lattice with a two-step antiferromagnetic phase transition. In this work, X-ray powder diffraction, transport, magnetic and thermal measurements, as well as Ce-LIII spectroscopy are presented in order to study the crossover from non-magnetic intermediate-valance regime to antiferromagnetic Kondo-lattice regime in the CeNi(GexSi1-x)2 series. Increasing Ge concentration will depress the hybridization between 4f electrons and conducting electrons and enhance the RKKY interaction, which eventually drive the system to a magnetically ordered state.
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U2 - 10.1016/j.ssc.2005.03.065
DO - 10.1016/j.ssc.2005.03.065
M3 - Article
AN - SCOPUS:19344364908
VL - 135
SP - 25
EP - 29
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 1-2
ER -