Evolution from intermediate-valence to antiferromagnetic Kondo-lattice behavior in CeNi(GexSi1-x)2

J. J. Lu, M. K. Lee, L. Y. Jang, C. Tien

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)25-29
頁數5
期刊Solid State Communications
135
發行號1-2
DOIs
出版狀態Published - 2005 七月

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 凝聚態物理學
  • 材料化學

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