Extended x-ray absorption fine structure study of incorporation of Bi and Pb atoms into the crystal structure of Ba4.5Nd9Ti18O54

Autor:	Iztok Arčon, Alojz Kodre, R. Frahm, T. Negas, Danilo Suvorov, Matjaz Valant
Rok vydání:	1997
Předmět:	X-ray spectroscopy Materials science Dopant Extended X-ray absorption fine structure Mechanical Engineering Mineralogy Dielectric Crystal structure Condensed Matter Physics Ion Crystallography Mechanics of Materials Local environment General Materials Science Solid solution
Zdroj:	Journal of Materials Research. 12:799-804
ISSN:	2044-5326 0884-2914
Popis:	In the extended x-ray absorption fine structure (EXAFS) study of the local environment of Bi3+ and Pb2+ ions incorporated in Ba4.5Nd9Ti18O54, actual sites of Bi- and Pb-incorporation are determined. Evidence is given that dopant ions are not distributed randomly on all theoretically possible sites; Bi3+ selectively enters one out of three possible channels, corresponding to the sites x = 0.9484, y = 0.2500, z = 0.2939, and/or x = 0.0455, y = 0.2500, z = 0.6928 previously occupied by Nd3+, while Pb2+ selectively enters site x = 0.4940, y = 0.2500, and z = 0.4993 previously shared by Ba2+ and Nd3+.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4fd71ae1893147797092a19daa77b4ff https://doi.org/10.1557/jmr.1997.0116 Zobrazit plný text záznamu Full text from SpringerLink