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Interface Investigation in Nanostructured BaTiO 3 /Silica Composite Ceramics
Author(s) -
Chung UChan,
Elissalde Catherine,
Mompiou Frédéric,
Majimel Jérôme,
Gomez Sonia,
Estournès Claude,
Marinel Sylvain,
Klein Andreas,
Weill François,
Michau Dominique,
Mornet Stéphane,
Maglione Mario
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03474.x
Subject(s) - materials science , spark plasma sintering , ferroelectricity , sintering , dielectric , ceramic , x ray photoelectron spectroscopy , transmission electron microscopy , composite number , composite material , scanning electron microscope , ferroelectric ceramics , chemical engineering , nanotechnology , optoelectronics , engineering
Silica‐coated ferroelectric particles are promising building blocks for functional bulk composites such as dielectric resonators, supercapacitors, or multiferroics. The ferroelectric/silica interface was fully investigated by means of high‐temperature in situ X‐ray diffraction, high‐resolution scanning electron microscopy, and X‐ray photoelectron spectroscopy. Mechanisms occurring at the interface were visualized using high‐resolution postmortem and in situ transmission electron microscopy performed at different temperatures. On the light of this interface investigation, we have used advanced sintering processes such as spark plasma sintering and microwave sintering to obtain nanostructured composite ceramics and to evaluate their dielectric properties.