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A CoCO 3 -added Pb((Zn 1/3 Nb 2/3 ) 0.20 (Zr 0.50 Ti 0.50 ) 0.80 )O 3 (0.2PZN–0.8PZT) system was prepared and investigated. The results reveal that Co ions are present in the mixed valence form of +2 and +3, and their relative mole ratio depends on doping content. Co doping induces a phase transformation from the MPB to the tetragonal...
Barium titanate (BaTiO 3 ) is known historically as the first ceramic piezoelectric material and shows a high possibility of being revitalized as a popular lead-free piezoelectric material. However, few systematic studies of the grain-size effects on the dielectric and piezoelectric properties of poled BaTiO 3 ceramics have been carried out to date. In this work, a series of dense...
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