Evidence for a Double Doping Regime in Nd:YAG nanopowders

6533b828fe1ef96bd1287a7e

RESEARCH PRODUCT

Evidence for a Double Doping Regime in Nd:YAG nanopowders

Marco Giorgetti Mario Berrettoni Maria Luisa Saladino Eugenio Caponetti

subject

Materials science Mechanical Engineering Doping Analytical chemistry chemistry.chemical_element Neodymium XANES XANES Spectral line ND:YAG Ion X-ray absorption fine structure NANOPOWDERS EXAFS chemistry.chemical_compound chemistry Mechanics of Materials Yttrium aluminium garnet General Materials Science Nd:YAG EXAFS Xanes Absorption (electromagnetic radiation)Settore CHIM/02 - Chimica Fisica

description

Nanopowders of Yttrium Aluminium Garnet doped with neodymium (Nd:YAG) were investigated by X-Ray Absorption Fine Structure (XAFS) at the Nd LIII-edge in the 1.3 - 20.8 % doping range. XANES spectra appear similar in the full range of the Nd concentration. However, a significant decrease in the white line intensity of XANES is revealed as the quantity of Nd doping ions increases. Plotting the white line intensity as a function of Nd doping ions reveals two linear trends with two different slopes, identifying a threshold value where the neodymium concentration reaches 5 at.% This experimental finding provides support for the existence of a double doping regime in Nd:YAG nanopowders.

year	journal	country	edition	language
2009-03-01

10.1007/s10853-009-3322-1 http://hdl.handle.net/10447/40384

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