Hyper-Raman scattering analysis of the vibrations in vitreous boron oxide

G. Simon; B. Hehlen; R. Vacher; E. Courtens

doi:10.1103/PhysRevB.76.054210

Hyper-Raman scattering analysis of the vibrations in vitreous boron oxide

Disordered Systems and Neural Networks 2009-11-13 v1

Authors: G. Simon , B. Hehlen , R. Vacher , E. Courtens

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Hyper-Raman scattering has been measured on vitreous boron oxide, $v-$ B $_2$ O $_3$ . This spectroscopy, complemented with Raman scattering and infrared absorption, reveals the full set of vibrations that can be observed with light. A mode analysis is performed based on the local D $_{3h}$ symmetry of BO $_3$ triangles and B $_3$ O $_3$ boroxol rings. The results show that in $v-$ B $_2$ O $_3$ the main spectral components can be succesfully assigned using this relatively simple model. In particular, it can be shown that the hyper-Raman boson peak arises from external modes that correspond mainly to librational motions of rigid boroxol rings.

Keywords

hyper-Raman scattering vitreous boron oxide vibrational modes boroxol rings boson peak librational motions symmetry analysis

Cite

@article{arxiv.0711.1782,
  title  = {Hyper-Raman scattering analysis of the vibrations in vitreous boron oxide},
  author = {G. Simon and B. Hehlen and R. Vacher and E. Courtens},
  journal= {arXiv preprint arXiv:0711.1782},
  year   = {2009}
}

Comments

13 pages, 11 figures, 2 tables

Hyper-Raman scattering analysis of the vibrations in vitreous boron oxide

Abstract

Keywords

Cite

Comments

Related papers