title: Effect of compositional variation on optical and structure properties of europium-doped SiO(2)-HfO(2) glasses.
abstract: Glasses with compositions (100-x)SiO(2)-xHfO(2):0.3Eu(3+) (molar ratio, x=0,10,20,30) for optical applications were prepared using the sol-gel route. The introduction of hafnium into the glass matrix induced the energy splitting of the F27 state of Eu(3+) ions. Furthermore, fluorescence line narrowing (FLN) spectra indicated that Eu(3+) clustering occurred in glasses containing no hafnium. The addition of hafnium promoted better dispersion of Eu(3+) ions in the glass matrix. The role of hafnium on modifying the properties of glasses was discussed with respect to x-ray diffraction and FLN analysis.
authors: Laboratoire des Propriétés Optiques des Matériaux et Applications (POMA), FRE CNRS 2988, Université d'Angers, 2 Boulevard Lavoisier, Angers Cedex 01, 49045, France.
authors: Chaofeng
authors: C
authors: Zhu
authors: André
authors: A
authors: Monteil
authors: Mohamed
authors: M
authors: Ei-Jouad
authors: Nathalie
authors: N
authors: Gaumer
authors: Stephane
authors: S
authors: Chaussedent