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Preparation and properties of La2O3-Ga2S3 glass-ceramics for IR materials

H.Takebea, T.Murakamib, M.Kuwabaraa and D.W.Hewakc

a. Department of Engineering Science for Electronics and Materials, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasugakouen, Kasuga-shi, Fukuoka 816-8580, Japan
b. Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
c. Optoelectronics Research Centre, University of Southampton, UK

Abstract

IR transmitting glass-ceramics were prepared by isothermal treatments of La2O3–Ga2S3 glasses. The glass-ceramics were characterized by crystalline phases, microstructure, Vickers hardness and mid (3–5 μm) IR transmittance. The Nd2S3-doped La2O3–Ga2S3 glass-ceramics consisting of a large numbers of (LaO)4Ga1.72S4.58, α-(LaO)GaS2 and α-Ga2S3 crystals with <1 μm in size exhibit a high hardness of 5.3 GPa and a mid IR transparency of >60%.


Journal of Non-Crystalline Solids (2006) Vol.352(23-25) pp.2425-2429

doi: 10.1016/j.jnoncrysol.2006.02.063

Southampton ePrint id: 42397

 

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Copyright University of Southampton 2006