Use este identificador para citar ou linkar para este item: http://www.repositorio.ufc.br/handle/riufc/2473
Título: Structural studies of lithium triborate (LBO–LiB3O5) in borophosphate glass-ceramics
Autor(es): Almeida, Ana Fabíola Leite
Thomazini, Daniel
Vasconcelos, Igor Frota de
Valente, Manoel Almeida
Sombra, Antonio Sérgio Bezerra
Palavras-chave: Lítio
Raios X - difração
Data do documento: 2001
Editor: International Journal of Inorganic Materials
Citação: ALMEIDA, A. F. L. ; THOMAZINI, D. ; VASCONCELOS, I. F. ; VALENTE, M. A. ; SOMBRA, A. S. B. (2001)
Abstract: In this paper lithium borophosphate glasses and glass-ceramics in the system 0.75|xB2O3.(100−x)P2O5|.25Li2O.yFe2O3 with 0≤x≤100 mol.% and y=4 mol.%, were studied by X-ray powder diffraction, Mössbauer and infrared spectroscopy. All the samples in the system present a glass or glass-ceramic behavior which was confirmed by X-ray diffraction. From our Mössbauer analysis, high spin Fe2+ and Fe3+ in a distorted octahedral coordination are present in all samples. One can conclude that both iron ions are at sites of distorted octahedral coordination, acting as network modifiers (NWM) in a very broad site distribution, which is characteristic of an amorphous structural neighborhood. Such glasses and glass-ceramics containing nonlinear optical materials formed in a controlled crystallization process would be interesting candidates for applications in new nonlinear optical devices.
Descrição: ALMEIDA, A. F. L. et al. Structural studies of the Lithium Triborate (LBO - LiB3O5) in borophosphate glass - ceramics. International Journal of Inorganic Materials, v. 3, p. 829-838, 2001.
URI: http://www.repositorio.ufc.br/handle/riufc/2473
ISSN: 1466-6049
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