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

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 th...

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Bibliographic Details
Published in:Optical materials express 2017-02, Vol.7 (2), p.627-632
Main Authors: Pandey, S. J., Martinez, M., Pelascini, F., Motto-Ros, V., Baudelet, M., Gaume, R. M.
Format: Article
Language:English
Subjects:
Aluminum
Analytical chemistry
Assessments
Ceramics
Chemical Sciences
Laser induced breakdown
Material chemistry
Mathematical analysis
Phase boundaries
Phases
Yttrium-aluminum garnet
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Summary: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.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.7.000627