Covalency and Deformability of Ag+-Ions in the Lattice Dynamics of Silver Halides

✍ Scribed by K. Fischer; H. Bilz; R. Haberkorn; W. Weber

• Book ID: 104543744
• Publisher: John Wiley and Sons
• Year: 1972
• Tongue: English
• Weight: 547 KB
• Volume: 54
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2220540128

✦ Synopsis

Abstract

The lattice vibrations of the silver halides AgCl and AgBr have been investigated using a shell model with deformable ions. The deformability of the d‐shell of the Ag^+^‐ion and its covalent coupling to the neighbours have been considered by introducing two new degrees of freedom in the electronic shell of the Ag^+^‐ion. They are of quadrupolar (Γ~12~^+^) and of rotational (Γ~15~^+^) symmetry character. The calculations have been confirmed by comparison with the unpolarized Raman spectra of second order.