Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/20109
Título: | High-pressure induced phase formation in the CuGaS2-CuGaO2 chalcopyrite-delafossite system |
Autor: | Salak, Andrei N. Zhaludkevich, Aleksandr L. Ignatenko, Oleg V. Lisenkov, Aleksey D. Yaremchenko, Aleksey A. Zheludkevich, Mikhail L. Ferreira, Mario G. S. |
Palavras-chave: | SOLAR-CELLS DIFFRACTION |
Data: | 2014 |
Editora: | WILEY-V C H VERLAG GMBH |
Resumo: | Phase formation under high pressure int he chalcopyrite-delafossite system has been studied at 5 GPa and 500-1000 degrees C. The parent chalcopyrite composition used in this study was slightly Cu-deficient, corresponding to the chemical formula (Cu,Ga)(0.905)GaS2. It was revealed that under high-pressure and high-temperature conditions, a mixture of the parent phases partly decomposes to form Cu2S and Ga2O3. The defect chalcopyrite (Cu,Ga)(0.905)GaS2 splits into a near-stoichiometric CuGaS2 and Cu-deficient subic (sphalerite-like) phase of the (Cu,Ga)(0.8)S composition. Such a phenomenon has been considered in terms of characteristic features of chalcopyrite and sphalerite crystal structures. Delafossite CuGaO2 at 5 GPa and 1000 degrees C was found to recrystallize entirely, which results in the disappearance of the stacking faults in its layered structure. [GRAPHICS] (C) 2014 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20109 |
DOI: | 10.1002/pssb.201451013 |
ISSN: | 0370-1972 |
Versão do Editor: | 10.1002/pssb.201451013 |
Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
High-pressure induced phase formation in the CuGaS 2-CuGaO 2chalcopyrite-delafossite system_10.1002pssb.201451013.pdf | 428.35 kB | Adobe PDF |
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.