Thermally stimulated crystallization glass system of (20-x)LiO2-80TeO(2)-xWO(3)


Autoria(s): Sidel, S. M.; Capanema, W. A.; Araujo, E. B.; Moraes, João Carlos Silos; Yukimitu, K.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/05/2011

Resumo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Tellurite glasses of the (20-x)LiO2-80TeO(2)-xWO(3) system were synthesized (x=0, 5, and 10) and annealed at different temperatures, and the crystallization kinetics was studied using XRD. FTIR spectroscopy, and DSC techniques. XRD data evidenced the amorphous state of as-quenched samples, while thermally treated samples showed the growth of crystalline phases. FTIR spectroscopy was used to observe the evolution of the vibrational mode assigned to the TeO2 phases. The presence of gamma-TeO2, alpha-TeO2, and alpha-Li2Te2O5 crystalline phases was observed for the sample TL, x=0, while only the first and second phases were observed for TLW5 and TLW10 samples, x=5 and 10, respectively, suggesting that WO3 enters the structure preferentially as glass former, inhibiting the growth of the phase alpha-Li2Te2O5. (C) 2011 Elsevier B.V. All rights reserved.

Formato

1216-1220

Identificador

http://dx.doi.org/10.1016/j.jssc.2011.03.013

Journal of Solid State Chemistry. San Diego: Academic Press Inc. Elsevier B.V., v. 184, n. 5, p. 1216-1220, 2011.

0022-4596

http://hdl.handle.net/11449/10105

10.1016/j.jssc.2011.03.013

WOS:000290549900036

Idioma(s)

eng

Publicador

Academic Press Inc. Elsevier B.V.

Relação

Journal of Solid State Chemistry

Direitos

closedAccess

Palavras-Chave #Glasses #Tellurium #Crystallization #Activation energy
Tipo

info:eu-repo/semantics/article