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Highly Transparent BaAl 4 O 7 Polycrystalline Ceramic Obtained by Full Crystallization from Glass
Author(s) -
Allix Mathieu,
Alahrache Salaheddine,
Fayon Franck,
Suchomel Matthew,
Porcher Florence,
Cardinal Thierry,
Matzen Guy
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201202282
Subject(s) - crystallite , crystallization , materials science , ceramic , orthorhombic crystal system , micrometer , grain size , nanotechnology , optoelectronics , crystallography , optics , chemical engineering , composite material , crystal structure , metallurgy , physics , chemistry , engineering
Fully dense, transparent polycrystalline ceramics are simply obtained by direct and complete crystallization from glass. This is demonstrated for the previously unreported composition, BaAl 4 O 7 , 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.