ZrO2 Nanopowders Doped with Eu: SEM, XRD and UV Spectroscopy Studies

Autor:	Emmanuel Palma Palma, Gerardo Villa Sánchez, Raúl Pérez Hernández, Oscar Fernando Olea Mejia, Federico García Santibañez, Demetrio Mendoza Anaya, Claudia E. Gutiérrez Wing
Rok vydání:	2012
Předmět:	Tetragonal crystal system Ultraviolet visible spectroscopy Materials science Scanning electron microscope Doping Analytical chemistry Cubic zirconia Thermal treatment Absorption (electromagnetic radiation) Monoclinic crystal system
Zdroj:	MRS Proceedings. 1371
ISSN:	1946-4274 0272-9172
DOI:	10.1557/opl.2012.168
Popis:	Zirconia nanopowders doped with different concentrations of Eu were prepared by the solgel method followed by a thermal treatment at 500°C. Morphological and crystallographic characteristics were studied by scanning electron microscopy, X-Ray diffraction and UV spectroscopoy. Results showed a modification of the size of nanopowder particles when the concentration of Eu is increased from 0.0 to 4.0 wt%. Also, at lower concentration of Eu the tetragonal ZrO2 is the most abundant phase while high concentrations of Eu lead to the formation of the monoclinic phase. The UV spectroscopy of ZrO2 samples shows two main absorption peaks at 228 and 214 nm. The novel characteristics of the ZrO2 nanopowders doped with Eu allow us to propose them for use as solar UV radiation detectors.
Databáze:	OpenAIRE
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