Accession Number:

ADA052754

Title:

Raman Scattering of Neat and Mixed Crystals of IrF6: The Jahn-Teller Interaction in the Ground State.

Descriptive Note:

Technical rept.,

Corporate Author:

COLORADO STATE UNIV FORT COLLINS DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1978-03-01

Pagination or Media Count:

31.0

Abstract:

Raman scattering data for neat and mixed crystal IrF6 samples at 77 K are reported. It is found that v2eg and v5t2g both evidence nonvanishing Jahn-Teller interactions for the gammA8g4A2g ground state. The linear Jahn-Teller parameters for these modes are D2 or 0.001 and D5 0,02. The v5 Jahn-Teller interaction is large enough to quench an expected exciton splitting of approx. 120 cm almost completely. The v2 Jahn-Teller interaction is small enough so that exciton interactions predominate however, normal v2 k 0 sharp line exciton structure is not observed. Anomolous phonon behavior is observed and discussed with respect to other hexafluoride phonon data. The non-Jahn-Teller active modes v1, v3, v4, v6 are found to behave in a fashion consistent with other members of this series. Author

Subject Categories:

  • Crystallography
  • Optics
  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE