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Highly Transparent BaAl4O7 Polycrystalline Ceramic Obtained by Full Crystallization from Glass

Authors

  • Mathieu Allix,

    Corresponding author
    1. CNRS, UPR3079 CEMHTI, 1D avenue de la Recherche Scientifique, 45071 Orléans cedex2, France, Université d'Orléans, Avenue du Parc Floral, BP 6749, 45067 Orléans cedex 2, France
    • CNRS, UPR3079 CEMHTI, 1D avenue de la Recherche Scientifique, 45071 Orléans cedex2, France, Université d'Orléans, Avenue du Parc Floral, BP 6749, 45067 Orléans cedex 2, France.
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  • Salaheddine Alahrache,

    1. CNRS, UPR3079 CEMHTI, 1D avenue de la Recherche Scientifique, 45071 Orléans cedex2, France, Université d'Orléans, Avenue du Parc Floral, BP 6749, 45067 Orléans cedex 2, France
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  • Franck Fayon,

    1. CNRS, UPR3079 CEMHTI, 1D avenue de la Recherche Scientifique, 45071 Orléans cedex2, France, Université d'Orléans, Avenue du Parc Floral, BP 6749, 45067 Orléans cedex 2, France
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  • Matthew Suchomel,

    1. Argonne National Laboratory, Advanced Photon Source, Argonne, Illinois 60439, USA
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  • Florence Porcher,

    1. Laboratoire Léon Brillouin, F-91191 Gif Sur Yvette, France
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  • Thierry Cardinal,

    1. Institut de Chimie de la Matière Condensée de Bordeaux, 87 Avenue du Docteur Schweitzer, 33608 Pessac, France
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  • Guy Matzen

    1. CNRS, UPR3079 CEMHTI, 1D avenue de la Recherche Scientifique, 45071 Orléans cedex2, France, Université d'Orléans, Avenue du Parc Floral, BP 6749, 45067 Orléans cedex 2, France
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Abstract

Fully dense, transparent polycrystalline ceramics are simply obtained by direct and complete crystallization from glass. This is demonstrated for the previously unreported composition, BaAl4O7, which exhibits two orthorhombic polymorphs with micrometer grain size, both optically transparent in the visible range. This innovative synthetic route to transparent polycrystalline ceramics should facilitate the discovery of new cost-effective chemical methods for transparent ceramic applications.

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