Solid solutions between LaN and Ca3N2: Defect rock salt nitrides La1-xCaxN1-x/3
- Clarke, SJ
- DiSalvo, FJ
Publication date
February 1997
DOI Publisher
Elsevier BV Journal
Journal of Solid State ChemistryAbstract
La1-xCaxN1-x/3(0<x<0.7) has been prepared by reacting LaN with Ca3N2at temperatures between 1200 and 1300°C. All the phases have the LaN-like rock-salt structure with no evidence for ordering between La and Ca or of thex/3 N vacancies. The lattice parameters of materials with different compositions lie between those of the isostructural LaN and CaNH according to Vegard law. Ca adopts octahedral coordination in the title compound, in contrast to its tetrahedral coordination geometry in Ca3N2. The materials are poorly conducting. © 1997 Academic Press
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