Statistical model structure of A1-xZxB2 Laves phase C15 system - the superconducting Ce1-xLaxRu2 alloy
DOI (Low Temperature Physics):
https://doi.org/10.1063/1.3064918Ключові слова:
Laves phases, Ce1-xLaxRu2 system, local structure, statistical model.Анотація
Local structure of Ce1-xLaxRu2 system, measured by EXAFS has been re-examined and correlated to the statistical ad hoc model, recently applied to the sphalerite, wurtzite and other intermetallic ternary alloys. The deconvolution of the EXAFS data show that the Ce1-xLaxRu2 ternary system is essentially a mixture of: CeRu2 and LaRu2 binary alloys with a small proportion of the Ce0.5La0.5Ru2 ternary configuration, being maximum for the intermediate concentration. Moreover, the analysis reveals that while the LaRu2 configuration exhibits a Bernoulli random distribution, the presence of a Ce atom affects both the CeRu2 and Ce0.5La0.5Ru2 distributions, strongly favoring the configuration with the CeCe pair, while keeping rare that with a single Ce ion.
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2008-12-05
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B.V. Robouch, A. Marcelli, N.L. Saini, and A. Kisiel, Statistical model structure of A1-xZxB2 Laves phase C15 system - the superconducting Ce1-xLaxRu2 alloy, Low Temp. Phys. 35, (2008) [Fiz. Nizk. Temp. 35, 116-121, (2008)] DOI: https://doi.org/10.1063/1.3064918.
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