Highly Transparent BaAl4O7 Polycrystalline Ceramic Obtained by Full Crystallization from Glass

Highly Transparent BaAl4O7 Polycrystalline Ceramic Obtained by Full Crystallization from Glass

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 v...

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Veröffentlicht in:Adv. Mater 2012-11, Vol.24 (41), p.5570-5575
Hauptverfasser: Allix, Mathieu, Alahrache, Salaheddine, Fayon, Franck, Suchomel, Matthew, Porcher, Florence, Cardinal, Thierry, Matzen, Guy
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum Compounds - chemistry
barium aluminate
Barium Compounds - chemistry
Ceramics - chemistry
Chemical Sciences
Crystallization
DFT calculations
Glass - chemistry
glass crystallization
Material chemistry
powder diffraction
structure determination
Temperature
transparent ceramics
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Beschreibung
Zusammenfassung: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.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201202282