Structural Properties of Tm2O3/Ho2O3 Co-Doped Borotellurite Glass Analyzed Using FTIR

Widoastiningrum Madya Sari Djeksadipuraa, *, Ahmad Marzukib, **, Devara Ega Faustac, and Venty Suryantid

aPhysics Graduate Program Department, Faculty of Mathematics and Natural Science, University of Sebelas Maret, Surakarta, 57126, Indonesia

bDepartment of Physics, Faculty of Mathematics and Natural Science, University of Sebelas Maret, Surakarta, 57126, Indonesia

cDoctoral of Physics Department, Faculty of Mathematics and Natural Science, University of Sebelas Maret, Surakarta, 57126, Indonesia

dDepartment of Chemistry, Faculty of Mathematics and Natural Science, University of Sebelas Maret, Surakarta, 57126, Indonesia

email: *widoasti2698@student.uns.ac.id
email: **amarzuki@mipa.uns.ac.id

Received 28 August, 2023

Abstract— Thulium/holmium co-doped bismuth borotellurite glass have been prepared using melt quenching technique. All the prepared glasses characterized using X-ray Diffraction (XRD) and Fourier-transform infrared (FTIR) spectroscopy at room temperature. There is no distinct peak in the XRD patterns over the observed range of 10° to 90°, indicating that all prepared glasses are amorphous. FTIR study reveals that the glass structure is composed of by TeO3, TeO4, BO4, BO3, BiO3, and BiO6 structural units. According to the bridging and non-bridging oxygen, the impact of the Ho2O3 addition was demonstrated by the calculated ratio of BO4 to TeO4 in the structural network. Bridging oxygen formation was proposed by the calculated ratio of BO4 to TeO4 increasing in along with the increase in Ho2O3 concentration (x = 0 to 1.0 mol %). Additionally, the declining ratio of BO4 to TeO4 (x = 1.5 to 2.5 mol %) explains the formation of non-bridging oxygen.

Keywords: structural properties, Tm3+/Ho3+ co-doped glass, bismuth borotellurite glasses, XRD, FTIR spectroscopy, deconvolution analysis

DOI: 10.1134/S1087659625600152