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Innovating transparent glass ceramics based on Ga2S3 – GeS2 – CsCl

Y. LEDEMI1,2,* , B. BUREAU1, L. CALVEZ1, M. ROZE1, E. GUILLEVIC1, N. AUDEBRAND3, M. POULAIN1, Y. MESSADDEQ2, X. H. ZHANG1

Affiliation

  1. Equipe Verres et Céramiques, UMR 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes, France
  2. Laboratorio dos Materiais Fotônicos, Instituto de Química, Universidade Estadual Paulista, 14801-970 Araraquara/SP, Brazil
  3. Equipe Matériaux inorganiques: Chimie douce et réactivité, UMR 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes, France

Abstract

In this paper, we describe the preparation of glass ceramics in the Ga2S3 – GeS2 – CsCl system. Visible and infrared transmitting glass ceramics were reproducibly obtained by appropriated heat treatment of the base glass. Crystals with controllable size of about 40 nm were homogeneously generated in the glassy matrix. X-ray diffraction characterizations have shown that gallium acts as nucleating agent in this material, giving rise to α-Ga2S3 crystals. Improved thermomechanical properties such as dilatation coefficient and resistance to fracture propagation have been observed in the prepared glass ceramics.

Keywords

Chalco halides, Crystallization, Glass-ceramics, Infrared glasses.

Citation

Y. LEDEMI, B. BUREAU, L. CALVEZ, M. ROZE, E. GUILLEVIC, N. AUDEBRAND, M. POULAIN, Y. MESSADDEQ, X. H. ZHANG, Innovating transparent glass ceramics based on Ga2S3 – GeS2 – CsCl, Optoelectronics and Advanced Materials - Rapid Communications, 3, 9, September 2009, pp.899-903 (2009).

Submitted at: Dec. 27, 2009

Accepted at: Sept. 15, 2009