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SYNTHESIS OF NANOSIZED POWDERS Nd-DOPED YAG BY COPRECIPITATION AND MICROEMULSION METHODS

Eugenio F. Caponetti ,  Delia Chillura Martino ,  Lucia Pedone ,  Maria Luisa Saladino 

Università di Palermo (UNIPA), Viale delle Scienze, Pallermo 90128, Italy

Abstract

Doped yttrium aluminum garnet (YAG, Y3Al5O12) materials are studied for their peculiar luminescence properties.
In order to explore the properties of one of these materials in the nanometric range, Nd:YAG (Nd:Y3Al5O12) nanoparticles have been produced by using two synthesis procedures, coprecipitation and microemulsion methods.
In the former, the Nd-YAG nanoparticles formation is performed by co-precipitation of two hydroxides, Al(OH)3 e Y(OH)3, in an aqueous solution containing Nd+2 ions. The thermal treatment at 900 C of the mixed hydroxide nanoparticles, allows obtaining the final product.
In the latter, the co-precipitation happens inside the aqueous core of the reverse micelle that constituted the water/CTAB/butanol/n-heptane microemulsion. The thermal treatment at 900 C of the microemulsion containing the mixed hydroxide allows to eliminate surfactant and oil and to obtain the doped mixed oxide.
The obtained materials, of stoichiometric composition Nd0.15Y2.85Al5O12, i.e. 5% in Nd atoms, was characterised using XRD, SEM, TEM and luminescence techniques. Characterization results will be discussed.

 

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Presentation: poster at E-MRS Fall Meeting 2004, Symposium A, by Eugenio F. Caponetti
See On-line Journal of E-MRS Fall Meeting 2004

Submitted: 2004-04-30 12:17
Revised:   2009-06-08 12:55