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

Abstract : 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.
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https://hal-univ-lyon1.archives-ouvertes.fr/hal-02317559
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Submitted on : Wednesday, October 16, 2019 - 10:42:43 AM
Last modification on : Thursday, October 15, 2020 - 8:54:04 AM

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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, OSA pub, 2017, 7 (2), pp.627-632. ⟨10.1364/OME.7.000627⟩. ⟨hal-02317559⟩

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