Article ID Journal Published Year Pages File Type
1505649 Solid State Sciences 2010 5 Pages PDF
Abstract

Both, SrAu0.5Pt0.5 and CaAu0.5Pt0.5, have been synthesized by reaction of corresponding mixtures of the pure elements at 1223 K in an argon atmosphere, and characterized by single-crystal X-ray analysis as well as by magnetic susceptibility and electric resistivity measurements. The new compounds crystallize in the CrB type of structure and thus are isostructural to BaAu0.5Pt0.5 (SrAu0.5Pt0.5: Cmcm; a = 4.262(1) Å; b = 11.435(3) Å; c = 4.632(1) Å; Z = 4; CaAu0.5Pt0.5: Cmcm; a = 3.9858(4) Å; b = 10.920(1) Å; c = 4.5249(5) Å; Z = 4). SrAu0.5Pt0.5 as well as CaAu0.5Pt0.5 are poor metallic conductors with ρ300K = 0.95 mΩ.cm and ρ300K = 3.93 mΩ.cm, respectively, and featuring diamagnetic behaviour.According to ESCA measurements SrAu0.5Pt0.5 and CaAu0.5Pt0.5 both can be formulated as having intermetallic character, showing a negligible electron transfer from alkaline earth metals to the noble metals.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
Authors
, , , ,