Structural Investigations of Glass Ceramics in the Ga2S3-GeS2-CsCl System

Nenhuma Miniatura disponível

Data

2009-11-05

Autores

Ledemi, Yannick
Bureau, Bruno
Calvez, Laurent
Le Floch, Marie
Roze, Mathieu
Lin, Changgui
Zhang, Xiang H.
Allix, Mathieu
Matzen, Guy
Messaddeq, Younes [UNESP]

Título da Revista

ISSN da Revista

Título de Volume

Editor

Amer Chemical Soc

Resumo

Transparent glass ceramics have been prepared in the Ga2S3-GeS2-CsCI pseudoternary system appropriate heat treatment time and temperature. In situ X-ray diffraction at the heat treatment temperature and Cs-133 and Ga-71 solid-state nuclear magnetic resonance have been performed in function of annealing time to understand the crystallization process. Both techniques have evidenced the nucleating agent role played by gallium with the formation of Ga2S3 nanocrystals. on the other hand, cesium is incorporated very much later into the crystallites during the ceramization. Moreover, the addition of CsCl, which is readily integrated into the glassy network, permits us to shift the optical band gap toward shorter wavelength. Thus, new glass ceramics transmitting in the whole visible range up to 11.5 mu m have been Successfully synthesized from the (Ga2S3)(35)-(GeS2)(25)-CsCl40 base glass composition.

Descrição

Palavras-chave

Como citar

Journal of Physical Chemistry B. Washington: Amer Chemical Soc, v. 113, n. 44, p. 14574-14580, 2009.