Spectroscopic and crystallographic properties of stoichiometric Na1-xTa1-xEu2xO3solid solution

Autor:	María-Elena Villafuerte-Castrejón, O Julio Rubio, F Antonio Muñtoz, Derek Sinclair, H. Gerardo Muñtoz
Rok vydání:	1996
Předmět:	Materials science Sodium Analytical chemistry chemistry.chemical_element Condensed Matter Physics Electronic Optical and Magnetic Materials Tantalate Ion chemistry Lattice (order) Europium Powder diffraction Stoichiometry Solid solution
Zdroj:	Ferroelectrics Letters Section. 21:127-134
ISSN:	1563-5228 0731-5171
Popis:	In this paper, the NaTa03-Eu203 solid solution has been characterized by x-ray powder diffraction and density measurements. It shows to exist over a very limited range of europium concentration, with a general formula NalxTalxEu2x03 (0 ≤ x ≤ 0.02). Within the range of compositions of the solid solutions, the optical properties (emission and excitation spectra) of our powder samples were also analyzed, and the results are in good agreement with the proposed mechanism for the europium substitution Na+ + Ta5+ ↔ 2Eu3+, where the Eu3+ ions enter the sodium sites as well as the tantalate positions in the lattice of NaTa03.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7c13648c3a3da067ccf1b1a554859b26 https://doi.org/10.1080/07315179608204753 Zobrazit plný text záznamu