TY - JOUR
T1 - Phase structure and piezoelectric properties of high Curie temperature BiYbO3-PbTiO3-BaTiO3 ceramics
AU - Feng, Gao
AU - Rongzi, Hong
AU - Jiaji, Liu
AU - Zhen, Li
AU - Lihong, Cheng
AU - Changsheng, Tian
PY - 2009/5/5
Y1 - 2009/5/5
N2 - Perovskite (1 - x)(0.1BiYbO3-0.9PbTiO3)-xBaTiO3 (BYPT-BT) ceramics were prepared by the conventional processing. The effect of BaTiO3 on the microstructure and piezoelectric properties was investigated. The results show that the perovskite phase and the Yb2Ti2O7 pyrochlore phase are coexisting in the BYPT-BT ceramics. BaTiO3 influences the lattice structure and Ba2+ will replace A-site ions of perovskite, which decreases the lattice constant ratio c/a, leading to the lattice distortion. With increasing BaTiO3 content, the percentage of pyrochlore phase decreases, which resulted in the increase of the dielectric constant ε and the piezoelectric constant d33. BYPT-BT ceramics with the high Curie temperatures of > 500 °C are obtained. And BYPT-BT4 ceramics with 0.12 mol BaTiO3 has the optimal piezoelectric properties, ε is 720, tan δ is 0.013, d33 is 34 pC/N, TC is 505 °C.
AB - Perovskite (1 - x)(0.1BiYbO3-0.9PbTiO3)-xBaTiO3 (BYPT-BT) ceramics were prepared by the conventional processing. The effect of BaTiO3 on the microstructure and piezoelectric properties was investigated. The results show that the perovskite phase and the Yb2Ti2O7 pyrochlore phase are coexisting in the BYPT-BT ceramics. BaTiO3 influences the lattice structure and Ba2+ will replace A-site ions of perovskite, which decreases the lattice constant ratio c/a, leading to the lattice distortion. With increasing BaTiO3 content, the percentage of pyrochlore phase decreases, which resulted in the increase of the dielectric constant ε and the piezoelectric constant d33. BYPT-BT ceramics with the high Curie temperatures of > 500 °C are obtained. And BYPT-BT4 ceramics with 0.12 mol BaTiO3 has the optimal piezoelectric properties, ε is 720, tan δ is 0.013, d33 is 34 pC/N, TC is 505 °C.
KW - Curie temperature
KW - Electrical properties
KW - Piezoelectric ceramics
KW - Pyrochlore phase
UR - http://www.scopus.com/inward/record.url?scp=63649090513&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2008.07.116
DO - 10.1016/j.jallcom.2008.07.116
M3 - 文章
AN - SCOPUS:63649090513
SN - 0925-8388
VL - 475
SP - 619
EP - 623
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
ER -