Vibrational spectra and structure of fluorozirconate glasses

1981

A series of binary fluorozirconate glasses have been prepared in the ZrF4–BaF2 system, containing between 52–74 mol % ZrF4. Their infrared and polarized Raman spectra are reported for the first time, down to 33 cm−1. The glass transition and crystallization temperatures were also measured. The vibrational modes have been assigned to different types of atomic motions in the glass network. The basic structure of the fluorozirconate glasses is proposed to consist of zigzag chains of ZrF6 octahedra, cross linked by Ba–F ionic bands. The interochtahedral Zr–F–Zr angle distribution was estimated to peak at ∼136°, based on the analysis of the two highest frequency Raman modes.

Autores da comunidade :

• 

  R

  Rui Manuel Amaral de Almeida

  ist11323

  Afiliações e fontes

  IST > ICEMS

  Instituto de Ciência e Engenharia de Materiais e Superfícies

  IST > DEQ

  Departamento de Engenharia Química

AIP Publishing

Journal of Chemical Physics

5954

5954

74

1

10.1063/1.441033

chemical-engineering - Engenharia Química

eng - Inglês