Crystallization of AgGaS2 melts enriched with Ag2S and Ga2S3 by K. A. Kokh, E. F. Sinyakova, and A. A. Politov

Crystal Research and Technology

Cryst. Res. Technol. 43, 409 (2008) - Abstract -

Crystallization of AgGaS₂ melts enriched with Ag₂S and Ga₂S₃

K. A. Kokh, E. F. Sinyakova, and A. A. Politov*

Institute of geology and mineralogy SB RAS, 3, Koptyuga ave., Novosibirsk 630090, Russia
*Institute of solid state chemistry and mechanochemistry SB RAS, 18, Kutateladze str., Novosibirsk 630128, Russia

Keywords	silver thiogallate, directed crystallization, thermal analysis
PACS	81.10.Fq, 81.30.-t, 61.50.Nw, 61.72.Dd
DOI	10.1002/crat.200711086

In this work we consider experiments with directed crystallization of melts with slight deviation from stoichiometric composition of AgGaS₂. The evolution of melt composition was calculated for both experiments using measured chemical composition of the solid phase. Also the difference in unit cell parameters and luminescence spectra for AgGaS₂ grown from the melts was found. Both monocrystal samples and samples synthesized from elementary Ag, Ga and S were used for thermal analyses. Obtained data suggests that different ways of preparing the samples are responsible for defects concentration and thus for so wide range (70°C) of melting temperatures reported in scientific literature.

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