%0 Conference Paper %B IOP Conference Series: Materials Science and Engineering %D 2013 %T Investigations on optical, structural and thermal properties of phosphate glasses containing terbium ions %A Elisa, M.a %A Sava, B.A.a %A Vasiliu, I.C.a %A Monteiro, R.C.C.b %A Iordanescu, C.R.a %A Feraru, I.D.a %A Ghervase, L.a %A Tanaselia, C.c %A Senila, M.c %A Abraham, B.c %R 10.1088/1757-899X/47/1/012025 %U https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893737403&doi=10.1088%2f1757-899X%2f47%2f1%2f012025&partnerID=40&md5=239a866840940e410c41831094aa443b %V 47 %X

{Aluminophosphate glasses belonging to the Li2O-BaO-Al 2O3- La2O3-P2O 5 system doped with Tb3+ were prepared and investigated. Methods as Induced Coupled Plasma-Mass Spectrometry (ICP-MS), Induced Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) and X-ray diffraction (XRD) have been used to establish the elemental composition of these vitreous materials. The influence of the Tb3+ ions on the optical properties of the phosphate glasses has been investigated in relation with the structural characteristics of the vitreous matrix. The optical behavior has been studied by ultra-violet-visible (UV-Vis) spectroscopy, revealing electronic transitions specific for terbium ions. Fluorescence spectroscopy measurements have been performed by excitation in the UV and visible domains (377 nm and 488 nm) which resulted in the most significant fluorescence peaks in the Vis domain (540 and 547 nm). Structural information via vibration modes were provided by Fourier Transform Infrared (FTIR) absorption spectra in the 400-4000 cm-1 range. Absorption peaks specific for the vitreous phosphate matrix were put in evidence as P-O-P symmetrical and asymmetrical stretching vibration modes, P-O-P bend, PO2- symmetrical and asymmetrical stretching vibration modes

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