| $Pb(Zn_{1/3}Nb_{2/3})O_3-Pb(Fe_{1/2}Nb_{1/2})O}3$ 계에서의 초전성질에 관한 연구 |
| 김정욱, 최성철, 이응상 |
| 한양대학교 무기재료공학과 |
| Pyroelectric Properties of $Pb(Zn_{1/3}Nb_{2/3})O_3-Pb(Fe_{1/2}Nb_{1/2})O}3$ Ceramics |
|
|
|
|
|
|
|
| ABSTRACT |
|
Pyroelectric properties, figure of merits, and the other properties of the Pb(Zn1/3Nb2/3)O3-Pb(Fe1/2Nb1/2)O3 system, as expected to have excellent pyroelectric properties in the operating temperature range of pyroelectric type infrared sensor, were investigated. In the Pb(Zn1/3Nb2/3)O3-Pb(Fe1/2Nb1/2)O3 system, suppression of the pyrochlore phase depended on sintering condition, as like sintering temperature, holding time, sintering atmosphere. The specimen, sintered by the same composition atmosphere powder at 105$0^{circ}C$ for 1.5h, possessed the best physical property. It was found that the piezoelectric parameters were mainly depended on the amount of spontaneous polarization and then the 0.2PZN-0.8PFN showed the best pyro- and piezoelectric properties. In terms of the experimental method, two pyroelectric-testing methods, i.e. static and dynamic methods, had a same tendency. Also the result of pyroelectric testing by the static method indicated that the diffuse phase transitiion resulted in the temperature difference of phase transition between dielectric constant and pyroelectric coefficient. |
| Key words:
$Pb(Zn_{1/3}Nb_{2/3})O_3-Pb(Fe_{1/2}Nb_{1/2})O}3$, Pyroelectrics, Figure of merit, Piezoelectrics |
|
PDF Links
Full text via DOI 
Download Citation 
