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Effects of La2O3 and MnO2 on the piezoelectric properties of 0.02Pb(Y2/3W1/3)O3−0.98Pb(Zr0.52Ti0.48)03

Published online by Cambridge University Press:  31 January 2011

Seok J. Yoon ,
So Y. Yoo ,
Jong H. Moon ,
Hyung J. Jung  and
Hyun J. Kim
Seok J. Yoon
Affiliation:
Division of Ceramics, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, Korea
So Y. Yoo
Affiliation:
Division of Ceramics, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, Korea
Jong H. Moon*
Affiliation:
Department of Inorganic Materials Engineering, Collage of Engineering, Chonnam National University, 300 Yongbong-dong, Kwangju, 500–757, Korea
Hyung J. Jung
Affiliation:
Division of Ceramics, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, Korea
Hyun J. Kim
Affiliation:
Division of Ceramics, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, Korea
*
a) Author to whom correspondence should be addressed.
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Abstract

The effects of the addition of La2O3 (0.1 wt. %−1 wt. %) and MnO2 (0.1 wt. %−1 wt. %) on the piezoelectric properties of the 0.02Pb(Y2/3W1/3)O3−0.98Pb(Zr0.52Ti0.48)O3 system were investigated to develop the composition available for an actuator. In the case of the addition of La2O3 to the system, the maximum values of d33 and kp were observed in the 0.1 wt. % La2O3, and the values of Qm did not change with the amount of La2O3. The values of d33, kp, and Qm were 428 × 10−12 C/N, 57%, and 71, respectively. On the other hand, the introduction of 0.5 wt. % MnO2 as an acceptor into the system resulted in the maximum Qm value of 741, exhibiting a d33 of 298 × 10−12 C/N, and a kp of 50%. In the case of the simultaneous addition of La2O3 and MnO2, the best piezoelectric properties are obtained from the composition of 0.02Pb(Y2/3W1/3)O3−0.98Pb(Zr0.52Ti0.48)O3 + 0.1 wt. % La2O3 + 0.3 wt. % MnO2. The values of d33, kp, and Qm were 345 × 10−12 C/N, 55%, and 741, respectively.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 2 , February 1996 , pp. 348 - 352
Copyright
Copyright © Materials Research Society 1996

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References

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