Published March 1, 1985 | Version v1
Journal article Metadata-only

Isotopic impurity modes and polariton dispersion in Li2GeO3 crystals

Creators

  • 1. Ljubljana Univ. (Yugoslavia). Inst. za Kemijo
  • 2. State University, Dnepropetrovsk (USSR)
  • 3. Centre National de la Recherche Scientifique, 94 - Thiais (France). Service de Spectrochimie Infrarouge et Raman

Description

Infrared reflection and Raman spectra of single crystals of 7Li2GeO3 and 6Li2GeO3 containing 7.42 and 9.10 % of 6Li and 7Li, respectively, are measured and oscillator parameters determined using the Kurosawa dispersion relation. The experimental attenuated total reflection spectra are in good agreement with the calculated polariton dispersion curves. The resonance type interactions between parent and isotopic impurity deformation modes are interpreted; the behaviour of the corresponding phonons depends on their symmetry species. (author)

Additional details

Publishing Information

Journal Title
Phys. Status Solidi B
Journal Volume
128
Journal Issue
1
Series
Phys. Status Solidi B.
Journal Page Range
53-67
ISSN
0370-1972

INIS

Country of Publication
Germany
Country of Input or Organization
German Democratic Republic
INIS RN
16072795
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
DAMPING; DISPERSION RELATIONS; GERMANATES; IMPURITIES; INFRARED SPECTRA; LATTICE VIBRATIONS; LITHIUM COMPOUNDS; LITHIUM 6; LITHIUM 7; MONOCRYSTALS; OSCILLATION MODES; OSCILLATOR STRENGTHS; PHONONS; POLARONS; RAMAN SPECTRA; REFLECTION; SPECTRAL SHIFT
Descriptors DEC
ALKALI METAL COMPOUNDS; CRYSTALS; GERMANIUM COMPOUNDS; ISOTOPES; LIGHT NUCLEI; LITHIUM ISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; OXYGEN COMPOUNDS; QUASI PARTICLES; SPECTRA; STABLE ISOTOPES