TY - GEN
T1 - Effect of particle size of BaCO3 and TiO2 powders on the properties of BaTiO3 ceramics
AU - Zhao, Xia
AU - Liu, Wenfeng
AU - Chen, Wei
AU - Zhong, Lisheng
PY - 2013
Y1 - 2013
N2 - BaTiO3 as the classical ferroelectrics has been found extensive applications in electronic devices over the past decades. How to obtain fine BaTiO3 particles with considerable high tetragonality which shows direct influence on the macroscopic properties of the sintered ceramics is a hot issue for fabrication throughout. In this paper, we studied the effect of the coordination ratio of the particle size of the BaCO3 and TiO 2 powders (abbreviated as Sb/St) in the solid-state reaction. We found that by increasing the SB/ST from 0.43 to 1.8, the tetragonality of the obtained BaTiO3 powders enhanced from 1.0065 to 1.0105. Moreover, when SB/ST<1, agglomeration occurred and resulted in coarse particles. The maximum of the dielectric constant at Curie temperature increased from 6000 to 10000. Besides, the remnant polarization Pr changed from 1.12 μC/cm2 to 6.07 μC/cm2 and EC changed from 84 kV/mm to 179 kV/mm. Such enhancements in both dielectric and ferroelectric properties could be ascribed to the increasement of the c/a ratio.
AB - BaTiO3 as the classical ferroelectrics has been found extensive applications in electronic devices over the past decades. How to obtain fine BaTiO3 particles with considerable high tetragonality which shows direct influence on the macroscopic properties of the sintered ceramics is a hot issue for fabrication throughout. In this paper, we studied the effect of the coordination ratio of the particle size of the BaCO3 and TiO 2 powders (abbreviated as Sb/St) in the solid-state reaction. We found that by increasing the SB/ST from 0.43 to 1.8, the tetragonality of the obtained BaTiO3 powders enhanced from 1.0065 to 1.0105. Moreover, when SB/ST<1, agglomeration occurred and resulted in coarse particles. The maximum of the dielectric constant at Curie temperature increased from 6000 to 10000. Besides, the remnant polarization Pr changed from 1.12 μC/cm2 to 6.07 μC/cm2 and EC changed from 84 kV/mm to 179 kV/mm. Such enhancements in both dielectric and ferroelectric properties could be ascribed to the increasement of the c/a ratio.
UR - https://www.scopus.com/pages/publications/84901743350
U2 - 10.1109/CEIDP.2013.6747447
DO - 10.1109/CEIDP.2013.6747447
M3 - 会议稿件
AN - SCOPUS:84901743350
SN - 9781479925964
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 603
EP - 606
BT - 2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013
T2 - 2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013
Y2 - 20 October 2013 through 23 October 2013
ER -