Study of the structure of mixed Zr-Y-O and Zr-Y-Mg-O oxides by XRD and XAFS methods

Autor:	A L Udovsky, V V Kriventsov, I S Saenko, D A Zyuzin, E M Moroz
Rok vydání:	2020
Předmět:	History Crystallography Materials science Computer Science Applications Education X-ray absorption fine structure
Zdroj:	Journal of Physics: Conference Series. 1431:012057
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1431/1/012057
Popis:	A comparative study was carried out of the structure of samples of zirconium oxides modified by yttrium and magnesium, synthesized by coprecipitation and calcined during 10 days at a temperature of 1250 °C. Refinement of the structure of the samples according to diffraction data within the framework of the fluorite type, gives high uncertainty factors, regardless of composition, and variation of structural parameters does not reduce their value. EXAFS analysis of the local structure of the samples revealed separate clusters consisting only of yttrium and oxygen ions in the structure of both samples. It has been suggested that the presence of these clusters prevents refinement of structures using the model of statistical solid solution with a fluorite structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6013759ac83a96ad374792a8685dcc52 https://doi.org/10.1088/1742-6596/1431/1/012057 Zobrazit plný text záznamu