Statistical model structure of A1-xZxB2 Laves phase C15 system - the superconducting Ce1-xLaxRu2 alloy

Автор(и)

  • B.V. Robouch Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Via Enrico Fermi 40, I-00044 Frascati, Italy
  • A. Marcelli Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Via Enrico Fermi 40, I-00044 Frascati, Italy
  • N.L. Saini Dipartimento di Fisica, Universitá di Roma «La Sapienza» P. le Aldo Moro 2, 00185 Roma, Italy
  • A. Kisiel Instytut Fizyki, Universytet Jagiellonski, Reymonta 4, 30-059 Krakow, Poland

DOI:

https://doi.org/10.1063/1.3064918

Ключові 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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Опубліковано

2008-12-05

Як цитувати

(1)
Robouch, B.; Marcelli, A.; Saini, N.; Kisiel, A. Statistical Model Structure of A1-xZxB2 Laves Phase C15 System - the Superconducting Ce1-xLaxRu2 Alloy. Fiz. Nizk. Temp. 2008, 35, 116-121.

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