Raman spectra of niobium oxides

A.Ann McConnell, J.S. Anderson, C.N.R. Rao

Research output: Contribution to journalArticle

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Abstract

Raman spectra of various types of niobium oxides have been studied along with their i.r. spectra and the spectra interpreted in the light of the structures of the oxides. Besides discussing LO-TO splitting in these oxides, bands characteristic of edge-shared and corner-shared NbO6, octahedra have been assigned. Tetrahedral modes of NbO4, PO4, and VO4 units present in some of the oxides have been assigned to distinct bands in the spectra indicating negligible coupling between the tetrahedra and NbO6 octahedra. The spectra of PNb9O25 and analogues suggest that they belong to I4/m space group rather than IZ group.
LanguageEnglish
Pages1067-1076
Number of pages9
JournalSpectrochimica acta. Part A: Molecular spectroscopy
Volume32
Issue number5
DOIs
Publication statusPublished - 1976

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Niobium oxide
Raman scattering
Oxides

Keywords

  • raman spectra
  • niobium oxides
  • i.r. spectra

Cite this

McConnell, A.Ann ; Anderson, J.S. ; Rao, C.N.R. / Raman spectra of niobium oxides. In: Spectrochimica acta. Part A: Molecular spectroscopy. 1976 ; Vol. 32, No. 5. pp. 1067-1076.
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Raman spectra of niobium oxides. / McConnell, A.Ann; Anderson, J.S.; Rao, C.N.R.

In: Spectrochimica acta. Part A: Molecular spectroscopy, Vol. 32, No. 5, 1976, p. 1067-1076.

Research output: Contribution to journalArticle

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T1 - Raman spectra of niobium oxides

AU - McConnell, A.Ann

AU - Anderson, J.S.

AU - Rao, C.N.R.

PY - 1976

Y1 - 1976

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AB - Raman spectra of various types of niobium oxides have been studied along with their i.r. spectra and the spectra interpreted in the light of the structures of the oxides. Besides discussing LO-TO splitting in these oxides, bands characteristic of edge-shared and corner-shared NbO6, octahedra have been assigned. Tetrahedral modes of NbO4, PO4, and VO4 units present in some of the oxides have been assigned to distinct bands in the spectra indicating negligible coupling between the tetrahedra and NbO6 octahedra. The spectra of PNb9O25 and analogues suggest that they belong to I4/m space group rather than IZ group.

KW - raman spectra

KW - niobium oxides

KW - i.r. spectra

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DO - 10.1016/0584-8539(76)80291-7

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EP - 1076

JO - Spectrochimica acta. Part A: Molecular spectroscopy

T2 - Spectrochimica acta. Part A: Molecular spectroscopy

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