Effects of the rare earth modifier on the Brillouin scattering from soda magnesia alumina silicate glasses

G. Q. Shen, Z. N. Utegulov, J. P. Wicksted, S. M. Mian

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Brillouin scattering spectra of rare earth doped glasses have been measured to investigate the differences of optical properties of soda magnesia alumina silicate glasses with different Eu3+ and Pr3+ concentrations. Measurements of Brillouin frequency shifts and intensities along with refractive indexes and densities allow us to calculate the acoustic sound velocities, elastic and photoelastic constants. The physical significance of the changes in elastic and photoelastic constants as a function of rare earth content and type is discussed. The results on elastic constants show that the glasses become harder with increasing concentration of the high coordinated rare earth modifiers. From Carleton's model, the Lorentz-Lorenz effect dominates P12, while the atomic effect dominates P44 in our glasses. The increase in both the bond polarisability parameter and Poisson's ratio with the rare earth concentration indicates the enhancement in polarisability and ionicity of these glasses.

Original languageEnglish
Pages (from-to)73-79
Number of pages7
JournalPhysics and Chemistry of Glasses
Volume43
Issue number2
Publication statusPublished - Apr 2002
Externally publishedYes

Fingerprint

Magnesium Oxide
Brillouin scattering
Silicates
Aluminum Oxide
Magnesia
Rare earths
silicates
Alumina
rare earth elements
aluminum oxides
Glass
glass
scattering
elastic properties
Acoustic wave velocity
acoustic velocity
Poisson ratio
Elastic constants
frequency shift
Refractive index

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Ceramics and Composites

Cite this

Effects of the rare earth modifier on the Brillouin scattering from soda magnesia alumina silicate glasses. / Shen, G. Q.; Utegulov, Z. N.; Wicksted, J. P.; Mian, S. M.

In: Physics and Chemistry of Glasses, Vol. 43, No. 2, 04.2002, p. 73-79.

Research output: Contribution to journalArticle

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