Premium
Crystal Structure and Electrical Properties of Lead‐Free (1 − x ) BaTiO 3 – x ( Bi 1/2 A 1/2 ) TiO 3 (A = Ag , Li , Na , K , Rb , Cs ) Ceramics
Author(s) -
Liu Xiaoming,
Tan Xiaoli
Publication year - 2013
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/jace.12494
Subject(s) - tetragonal crystal system , curie temperature , ferroelectricity , dielectric , materials science , analytical chemistry (journal) , solid solution , crystal structure , coercivity , doping , mineralogy , crystallography , atmospheric temperature range , chemistry , condensed matter physics , metallurgy , physics , optoelectronics , chromatography , ferromagnetism , meteorology
Ceramics of solid solutions (1 − x ) BaTiO 3 – x ( Bi 1/2 A 1/2 ) TiO 3 (A = Ag , Li , Na , K, Rb , Cs , x ≤ 0.20) were prepared and their crystal structures, dielectric, ferroelectric, and piezoelectric properties were investigated. It was found that ( Bi 1/2 A 1/2 ) TiO 3 ‐type doping compounds broadened the temperature range of the tetragonal phase in BaTiO 3 and all the compositions examined displayed a tetragonal structure at room temperature. The Curie temperature ( T C ) was observed to increase with respect to pure BaTiO 3 to the range 140°C–210°C through solid solution. Remanent polarization ( P r ) tended to decrease with increased content of doping compound, whereas the coercive field ( E C ) rose and piezoelectric coefficient ( d 33 ) fell. The highest d 33 value in the solid solutions was observed in 0.97 BaTiO 3 –0.03( Bi 1/2 Ag 1/2 ) TiO 3 at 90 pC/N.