Dependence of the emission electric dipole line strength of Eu 3+ on the composition of lead borate glasses

Abstract

Lead borate glasses xB 2O 3+(99– x)PbO+0.5Eu 2O 3 ( x=70, 60, …, 10) were prepared by melt-quenching method. The luminescent properties were characterized with excitation and emission spectra. The emission intensities for 5D 0- 7F J ( J=0–4) were analyzed to give variation of the relative electric dipole line strengths with the composition of glasses so as to examine the crucial implicit assumption of independent electric dipole line strength on the composition of glass in the Phys. Rev. Lett. 2003, 91, 203903 paper studying local-field effect.