Applicability of Vegard's Law to the PbxSn1−xTe Alloy System
- 15 March 1969
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 40 (4) , 1918-1921
- https://doi.org/10.1063/1.1657866
Abstract
The relationship between lattice constant a0, alloy fraction x, and stoichiometry has been studied for the PbxSn1−xTe alloy system. Using the hole concentration p as a measure of the deviation from stoichiometry, it is shown that a0 for SnTe varies with p according to a0(SnTe)=−1.7×10−23 p+6.327, where a0 is measured in Å, and p in cm−3. For small deviations from stoichiometry it is shown that the alloys obey Vegard's law. Evidence is presented that Vegard's law holds in general providing fixed deviations from stoichiometry are considered. The functional relationship between a0, x, and p may be expressed as a0(alloy)=0.133x+a0(SnTe), where a0(SnTe) is given by the expression presented above. On the basis of this equation it is shown that previously reported deviations from Vegard's law arise in a natural way from the varying deviations from stoichiometry which characterize these alloys.This publication has 9 references indexed in Scilit:
- Phase studies of the Pb1−xSnxTe alloysMaterials Research Bulletin, 1967
- DIODE LASERS OF Pb1−ySnySe AND Pb1−xSnxTeApplied Physics Letters, 1966
- Preparation of epitaxial SnTe films of controlled carrier concentrationSolid State Communications, 1966
- Band Structure and Laser Action inPhysical Review Letters, 1966
- Alloy Evaporating SystemReview of Scientific Instruments, 1965
- Band structure of HgTe and HgTe-CdTe alloysSolid State Communications, 1964
- Deviations from stoichiometry and electrical properties in SnTeJournal of Physics and Chemistry of Solids, 1963
- Nonstoichiometry in Some Group IV TelluridesPublished by American Chemical Society (ACS) ,1963
- Examination of Absolute and Comparative Methods of Polarographic AnalysisAnalytical Chemistry, 1947