采用传统陶瓷工艺制备(1－x)Bi(Sc0．9(Zn1/2 Ti1/2)0．1)O3-xPbTiO3(BS-0．1BZT-xPT)陶瓷试样.研究了BZT含量为0．1％(摩尔分数)时,不同PT含量BS-0．1BZT-xPT压电陶瓷结构、介电和压电性能的变化规律.研究表明,随着PT含量增加,试样从三方相向四方相转变；当PT含量为0．60~0．62之间时,试样处在三方到四方的过渡区.当PT量为0．6时,试样压电性能达到最大值(d33＝250 pC/N,kp＝43％).当PT量增加,试样居里温度呈上升趋势,εr max值先增加后减小.当PT含量为0．60时,试样铁电性能达到最大值,Pr＝34．4μC/cm2,Ec＝19．2 kV/cm.
(1-x)Bi(Sc0.9 (Zn1/2 Ti1/2 )0.1 )O3-xPbTiO3 (BS-0.1BZT-xPT)ceramics were prepared by conventional powder-processing method.It is found that the lattice structure gradually changes from rhombohedral phase to tetragonal phase with increasing the PT content,and the PT content between 0.60 and 0.62 is the phase transi-tional region between the rhombohedral phase to the tetragonal phase.When PT content is 0.6,the samples ex-hibited good piezoelectric properties with d33 about 250 pC/N and kp about 43%.With increasing the PT con-tent,the Curie temperature (Tc)is increased,and the value ofεr max is first increased and then decreased.Final-ly,it can be found that,when PT content is 0.6,the samples also exhibit good ferroelectric properties with Pr=34.4μC/cm2 and Ec=19.2 kV/cm.
参考文献
| [1] | Eitel RE;Zhang SJ;Shrout TR;Randall CA;Levin I.Phase diagram of the perovskite system (1-x)BiScO3-xPbTiO(3)[J].Journal of Applied Physics,20045(5):2828-2831. |
| [2] | Zhang SJ;Eitel RE;Randall CA;Shrout TR;Alberta EF.Manganese-modified BiScO3-PbTiO3 piezoelectric ceramic for high-temperature shear mode sensor[J].Applied physics letters,200526(26):2904-1-2904-3-0. |
| [3] | Si Chen;Xianlin Dong;Hong Yang.Effects of Niobium Doping on the Microstructure and Electrical Properties of 0.36BiScO_3-0.64PbTiO_3 Ceramics[J].Journal of the American Ceramic Society,20072(2):477-482. |
| [4] | Winotai P;Udomkan N;Meejoo S.Piezoelectric properties of Fe2O3-doped (1-x)BiScO3-xPbTiO(3) ceramics[J].Sensors and Actuators, A. Physical,20052(2):257-263. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%