Interstitial Sn2+ in synthetic and natural cassiterite crystals

Autor:	Alvin J. Cohen, J. I. D. Adekeye, Bruce Hapke, Deborah P. Partlow
Rok vydání:	1985
Předmět:	Absorption spectroscopy Chemistry Cassiterite Light treatment Analytical chemistry engineering.material Crystal Octahedron Geochemistry and Petrology Impurity engineering SN2 reaction General Materials Science Absorption (chemistry)
Zdroj:	Physics and Chemistry of Minerals. 12:363-369
ISSN:	1432-2021 0342-1791
Popis:	Evidence for the presence of Sn2+ in an octahedral interstitial site in synthetic and natural cassiterite (SnO2) is presented. The absorption and relative absorption spectral peaks measured are similar to ones found in Sn2+-doped KI by absorption spectrophotometry and Sn2+-doped soda-silica glass by reflection spectroscopy. The estimated quantity of interstitial Sn2+ present is found by calculating that needed to balance the uncompensated M3+ impurity in substitutional Sn4+ sites where M3+ is mainly Al3+ and Fe3+. Estimates of the oscillator strengths of three Sn2+ bands detected by absorption spectrophotometry in the synthetic crystal are given. The interstitial Sn2+ content in synthetic and natural cassiterite is not affected by heating,60Co gamma irradiation, or UV light treatment with a high pressure xenon-mercury lamp.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6b78147a3859c59f20295c1aefd7db86 https://doi.org/10.1007/bf00654347 Zobrazit plný text záznamu Full text from SpringerLink