Infrared spectra of lanthanum gallogermanate glasses
2004; Elsevier BV; Volume: 85; Issue: 1 Linguagem: Inglês
10.1016/j.matchemphys.2003.12.021
ISSN1879-3312
AutoresL.G. Hwa, Yi-Rui Chang, W.C. Chao,
Tópico(s)Luminescence Properties of Advanced Materials
ResumoThe structures of two series of lanthanum gallogermanate glasses are investigated by the Fourier transform infrared (FT-IR) spectroscopy. These glasses show excellent infrared transparency up to the mid-IR (6–7 μm) region. The structural roles of lanthanum, gallium and germanium ions are discussed. Evidence of the existence of both tetrahedral (four-fold coordination) and octahedral (six-fold coordination) of Ga and Ge has been found in the glass networks of these glasses.
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