Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Pyroelectric Properties of $Pb(Zn_{1/3}Nb_{2/3})O_3-Pb(Fe_{1/2}Nb_{1/2})O}3$ Ceramics

$Pb(Zn_{1/3}Nb_{2/3})O_3-Pb(Fe_{1/2}Nb_{1/2})O}3$ 계에서의 초전성질에 관한 연구

  • 김정욱 (한양대학교 무기재료공학과) ;
  • 최성철 (한양대학교 무기재료공학과) ;
  • 이응상 (한양대학교 무기재료공학과)
  • Published : 1995.06.01
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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.

Keywords

References

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