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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

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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 d 33 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 d 33 of 298 × 10−12 C/N, and a k p 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 d 33, k p, and Q m were 345 × 10−12 C/N, 55%, and 741, respectively.

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Authors and Affiliations

  1. Division of Ceramics, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, Korea

    Seok J. Yoon, So Y. Yoo, Hyung J. Jung & Hyun J. Kim

  2. Department of Inorganic Materials Engineering, Collage of Engineering, Chonnam National University, 300 Yongbong-dong, Kwangju, 500-757, Korea

    Jong H. Moon

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  1. Seok J. Yoon
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  2. So Y. Yoo
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  3. Jong H. Moon
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  4. Hyung J. Jung
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  5. Hyun J. Kim
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Yoon, S.J., Yoo, S.Y., Moon, J.H. et al. Effects of La2O3 and MnO2 on the piezoelectric properties of 0.02Pb(Y2/3W1/3)O3−0.98Pb(Zr0.52Ti0.48)03 . Journal of Materials Research 11, 348–352 (1996). https://doi.org/10.1557/JMR.1996.0041

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  • DOI: https://doi.org/10.1557/JMR.1996.0041

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