The pseudo-binary Pr1−xYxSn3 system was investigated to detect possible valence instabilities of praseodymium induced by chemical pressure. Differential thermal analysis, metallographic and X-ray determinations showed that the solid solubility of yttrium in the cubic PrSn3 lattice occurs in a narrow homogeneity range of yttrium concentration (0–0.3 atoms per formula unit). Magnetic susceptibility measurements were performed in the temperature range 1.5–300 K for the existing phases. Evidence of chemical pressure effects is shown, but antiferromagnetic order persists in all the phases examined. Deviations from the molecular field approximation are observed.
Investigations about the chemical pressure effects on the valence behaviour of Praseodymium intermetallics. I: The Pr1-xYxSn3 family
EGGENHOFFNER, ROBERTO
1989-01-01
Abstract
The pseudo-binary Pr1−xYxSn3 system was investigated to detect possible valence instabilities of praseodymium induced by chemical pressure. Differential thermal analysis, metallographic and X-ray determinations showed that the solid solubility of yttrium in the cubic PrSn3 lattice occurs in a narrow homogeneity range of yttrium concentration (0–0.3 atoms per formula unit). Magnetic susceptibility measurements were performed in the temperature range 1.5–300 K for the existing phases. Evidence of chemical pressure effects is shown, but antiferromagnetic order persists in all the phases examined. Deviations from the molecular field approximation are observed.
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