Crystal structure of Ag7Ca2 - a new intermetallic structure type

G. Jeffrey Snyder, Arndt Simon*

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Single crystals of Ag7Ca2 were grown and examined without the application of mechanical stress. The crystal structure was solved by single-crystal X-ray diffraction. Ag7Ca2 is orthorhombic, space group Cmcm, a = 9.478(2) A ̊, b = 5.525(1) A ̊, c = 14.079(2) A ̊, Z = 4, R = 0.034, with a simple new structure type containing Kagomé nets of silver atoms, surrounded by hexagonal and triangular nets of silver and calcium atoms. These layers are then stacked as in hexagonal close packing. Predicted mechanical properties are discussed briefly. The c-axis conductivity of Ag7Ca2, measured as a function of temperature on a single crystal, approaches that of silver metal.

Original languageEnglish (US)
Pages (from-to)65-69
Number of pages5
JournalJournal of Alloys and Compounds
Volume223
Issue number1
DOIs
StatePublished - May 15 1995

Keywords

  • Calcium
  • Crystal structure
  • Silver
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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