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DOI: 10.1039/A902335F (Paper) Reference Section for: J. Mater. Chem., 1999, 9, 1609-1613

Lead-free ferroelectric relaxor ceramics in the BaTiO3-BaZrO3-CaTiO3 system

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Jean Ravez, Cédric Broustera and Annie Simon

Abstract

Relative permittivity studies of ceramics with a variety of compositions in the BaTiO3-BaZrO3-CaTiO3 system showed some of them to be ferroelectric relaxors at temperatures close to 295 K. Such a favourable effect is due to the Ca2+ for Ba2+ cationic substitution. In addition a spontaneous classical ferroelectric-relaxor ferroelectric transition was evidenced. Some of these new compositions are of interest for applications (dielectrics for capacitors, actuators) since they are environmentally friendly.

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