Changes in the Structure and Properties of Quartz Successively Implanted by Zn and F Ions during Thermal Annealing

Autor:	Vladimir Privezentsev, E. A. Steinman, A. V. Makunin, Nikolay N. Kolesnikov, A. N. Tereshchenko
Rok vydání:	2019
Předmět:	010302 applied physics Materials science Annealing (metallurgy) Doping Analytical chemistry Willemite chemistry.chemical_element General Chemistry Zinc engineering.material 010403 inorganic & nuclear chemistry Condensed Matter Physics 01 natural sciences Crystallographic defect 0104 chemical sciences Ion Metal chemistry visual_art 0103 physical sciences visual_art.visual_art_medium engineering General Materials Science Quartz
Zdroj:	Crystallography Reports. 64:451-456
ISSN:	1562-689X 1063-7745
DOI:	10.1134/s1063774519030210
Popis:	The temperature dependences of structural and phase transformations in quartz successively implanted by zinc and fluorine during annealing in nitrogen have been studied. Plates were doped with 64Zn+ ions to a dose of 5 × 1016 cm–2 with an energy of 50 keV and then with 19F+ ions to the same dose but with an energy of 17 keV. After the implantation, individual Zn-containing particles about 100 nm in size were found on the sample surface. These particles decrease in size during annealing (by an order of magnitude after annealing at 800°C). The implantation leads to the formation of radiation-induced point defects and their clusters in the quartz bulk. Radiation-induced defects are gradually annealed during the heat treatment, and the phase of metallic zinc is transformed first to its zinc oxide (ZnO) at 600°C and then to willemite (Zn2SiO4) at 800°C.
Databáze:	OpenAIRE
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