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Aurivillius phase formation in Nb2O5−and Bi2O3−doped BaTiO3

✍ Scribed by S. Pathumarak; W. E. Lee

Publisher: Springer US
Year: 1996
Tongue: English
Weight: 281 KB
Volume: 7
Category: Article
ISSN: 0957-4522
DOI: 10.1007/bf00133108

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✦ Synopsis

The reaction sequence in the BaTiO3-Nb2Os-Bi203 system leading to the core-shell microstructure that causes the temperature-stable dielectric response has been examined using X-ray diffraction. The starting oxides react to form bismuth oxide layer Aurivillius phases at low temperatures which, inturn, react with remnant oxides to form the tetragonal tungsten bronze phase, Ba4Bi2Ti4Nb603o, which acts as the source of dopants responsible for core-shell formation.

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