Quantification of non-stoichiometry in YAG ceramics using laser-induced breakdown spectroscopy

S. J. Pandey (1) , M. Martinez (2) , F. Pelascini (3) , Vincent Motto-Ros (4) , M. Baudelet (2) , R. M. Gaume (5, 6)

1 UCF - University of Central Florida [Orlando]
2 National Center for Forensic Science
3 CRITT Matériaux Alsace
4 ILM - Institut Lumière Matière [Villeurbanne]
5 CREOL - The College of Optics and Photonics [Orlando]
6 UCF | NTC - Nanoscience Technology Center [Orlando]

Strict control of composition is of paramount importance for the reproducible fabrication of advanced ceramics. In particular, the preparation of high-grade transparent ceramics of definite line-compounds requires that the ratio of major constitutive elements be quantified with a precision better than a fraction of a mole percent to prevent the precipitation of secondary phases and the scattering of light. Such a requirement poses difficult challenges to most analytical methods, especially when applied to nearly-stoichiometric insulating phases. In this work, we show that laser-induced breakdown spectroscopy (LIBS) is a well-suited technique for the assessment of non-stoichiometry in yttrium aluminum garnet (YAG) ceramics and that the aluminum to yttrium ratio can be determined with a resolution of 0.3 mol %, well within the phase boundaries of YAG.

Domaines: Matériaux; Chimie analytique

S. J. Pandey, M. Martinez, F. Pelascini, Vincent Motto-Ros, M. Baudelet, et al.. Quantification of non-stoichiometry in YAG ceramics using laser-induced breakdown spectroscopy. Optical Materials Express, 2017, 7 (2), pp.627-632. ⟨10.1364/OME.7.000627⟩. ⟨hal-02317559⟩