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INVESTIGATIONS OF CHEMICAL PRESSURE EFFECTS ON THE VALENCE BEHAVIOR OF PRASEODYMIUM INTERMETALLICS .1. THE PR1-XYXSN3 FAMILY

By FRANCESCHI E.A. CANEPA F., OLCESE GL and EGGENHOFFNER R.

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

Publisher: 'Elsevier BV'
Year: 1989
DOI identifier: 10.1016/0022-5088(89)90176-8
OAI identifier: oai:iris.unige.it:11567/376532
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