| 소결온도와 B2O3첨가량에 따른 Mn첨가 PMN-PZT의 유전 및 압전특성의 변화 |
| 신효순 |
| 삼성전기주식회사 중앙연구소 |
| Dielectric/piezoelectric Properties of Mn-Doped PMN-PZT with Variations of the Sintering Temperature and Addition of B2O3 |
| Shin Hyo-Soon |
|
|
|
|
|
|
| ABSTRACT |
|
The additive of low temperature sintering in Mn-doped PMN-PZT known as high piezoelectric materials was studied in this experiment. B$_2$O$_3$ was used for the additive of low temperature sintering. The effects of sintering temperature in dielectric, and piezoelectric properties were investigated with the amounts of B$_2$O$_3$. Sintered density was increased in comparison with no addition and under 2wt％ B$_2$O$_3$ and lower sintering temperature than 100$0^{circ}C$. Therefore, in the low sintering temperature, the densification was improved by the addition of the B$_2$O$_3$. However, the sintering density was lower than that of the main composition in the case of the sintered at over 10$50^{circ}C$. Dielectric constant with the addition of B$_2$O$_3$ was evaluated. The dielectric constant was 1000 2 wt％ of B$_2$O$_3$ and sintered at 100$0^{circ}C$. Under 2wt％ of B$_2$O$_3$, the electromechanical coupling factor and the piezoelectric constant were not so much decreased. The electromechanical coupling factor and the piezoelectric constant were 50％ and 300(${times}$10$^{-12}$ C/N) respectively. The mechanical quality factor was increased with B$_2$O$_3$. The mechanical quality factor was 1700 at 0.5wt％ B$_2$O$_3$ and sintered at 110$0^{circ}C$. Dielectric loss was less than 0.5％ regardless of the amount of B$_2$O$_3$. |
| Key words:
Piezoelectric, PMN-PZT, $B_2$$O_3$, Low temperature sintering |
|
|
|
PDF Links
Full text via DOI
Download Citation 
