The local structure of bismuth borate glasses doped with europium ions evidenced by FT-IR spectroscopy

摘要

Glasses of the xEu_2O_3 · (100 - x)[4Bi_2O_3 · B_2O_3] system, with 0 ≤ x ≤ 40 mol% were studied by FT-IR spectroscopy and density measurements. FT-IR spectroscopy and density data suggest that the europium ions play the network modifier role in the studied glasses. These data show that the glass structure consists on the BiO_3, BiO_6, BO_3 and BO_4 units, and the conversion among these units mainly depends on the EU_2O_3 content.