TY - JOUR
T1 - Effects of sintering temperature and poling conditions on the electrical properties of Ba0.70Ca0.30TiO3 diphasic piezoelectric ceramics
AU - Li, Cai Xia
AU - Yang, Bin
AU - Zhang, Shan Tao
AU - Zhang, Rui
AU - Cao, Wen Wu
N1 - Funding Information:
This work was supported by the National Science and Technology Support Program ( SQ2012BAJY3766 ), the National Nature Science Foundation of China ( 10704021, 51102062, and 11174127 ), the Key Scientific and Technological Project of Harbin (Grant no. 2009AA3BS131 ).
PY - 2013/4
Y1 - 2013/4
N2 - The effects of sintering temperature and poling conditions on the electrical properties of tetragonal and orthorhombic diphasic Ba 0.70Ca0.30TiO3 (BCT) lead-free ceramics have been systematically investigated. On the one hand, with increasing sintering temperature from 1270 °C to 1400 °C, the bulk density increases monotonically and the Curie temperature keeps almost constant with the value of ∼120 °C, whereas the grain size, the maximum relative dielectric constant, room temperature polarization reach the maximum values for samples sintered at 1340 °C. On the other hand, it is found that the piezoelectric property depends on poling electric field and poling temperature significantly. An enhanced piezoelectric behavior of d33=126 pC/N, k p=0.29, and Qm=588 is obtained for the BCT ceramics poled at 100 °C with 30 kV/cm field for 20 min. The aging behavior of the piezoelectric property is also investigated.
AB - The effects of sintering temperature and poling conditions on the electrical properties of tetragonal and orthorhombic diphasic Ba 0.70Ca0.30TiO3 (BCT) lead-free ceramics have been systematically investigated. On the one hand, with increasing sintering temperature from 1270 °C to 1400 °C, the bulk density increases monotonically and the Curie temperature keeps almost constant with the value of ∼120 °C, whereas the grain size, the maximum relative dielectric constant, room temperature polarization reach the maximum values for samples sintered at 1340 °C. On the other hand, it is found that the piezoelectric property depends on poling electric field and poling temperature significantly. An enhanced piezoelectric behavior of d33=126 pC/N, k p=0.29, and Qm=588 is obtained for the BCT ceramics poled at 100 °C with 30 kV/cm field for 20 min. The aging behavior of the piezoelectric property is also investigated.
UR - https://www.scopus.com/pages/publications/84872948080
UR - https://www.scopus.com/pages/publications/84872948080#tab=citedBy
U2 - 10.1016/j.ceramint.2012.09.073
DO - 10.1016/j.ceramint.2012.09.073
M3 - Article
AN - SCOPUS:84872948080
SN - 0272-8842
VL - 39
SP - 2967
EP - 2973
JO - Ceramics International
JF - Ceramics International
IS - 3
ER -