SPECTROSCOPIC PROPERTIES OF B2O3–PbO–Nd2O3 GLASSES

Abstract

Samples belonging to x Nd 2 O 3(100-x) [ 2B 2 O 3· PbO ] glass system, with 0≤ x≤ 40 mol%, are investigated by IR and UV–VIS spectroscopies in order to obtain evidence for the influence of Nd 2 O 3 on the local order from 2B 2 O 3· PbO glass matrix. Besides the IR absorption bands characteristic to lead and boron arrangements, typical absorption lines of Nd 3+ ions around 4000 cm -1 and 6000 cm -1 are recorded. The 6000 cm -1 band appears only for the samples with x≥25 mol% Nd 2 O 3. The split of some UV–VIS absorption bands arising from transitions of neodymium ions in doublet lines as well as the shift of the absorption bands as the Nd 2 O 3 content increases denote the influence of the lead–borate matrix on the radiative transitions of the lanthanide ion.