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Effect of MnO2 on the Piezoelectric Properties of the 0.75Pb(Zr0.47Ti0.53)O3-0.25Pb(Zn1/3Nb2/3)O3 Ceramics
Ist Teil von
Journal of the American Ceramic Society, 2010-09, Vol.93 (9), p.2537-2540
Ort / Verlag
Malden, USA: Blackwell Publishing Inc
Erscheinungsjahr
2010
Quelle
Wiley Online Library
Beschreibungen/Notizen
MnO2 was added to 0.75Pb(Zr0.47Ti0.53)O3–0.25Pb(Zn1/3Nb2/3)O3 (0.75PZT–0.25PZN) ceramics in order to make a high‐power piezoelectric material. The Mn4+ ion produced a defect dipole consisting of an Mn4+ ion and an oxygen vacancy that transformed the 0.75PZT–0.25PZN ceramics into hard materials. The Qm value significantly increased with the addition of MnO2 and reached a value of 1680 for the 1.5 mol% MnO2‐added 0.75PZT–0.25PZN ceramic. Moreover, this specimen exhibited a high kp of 0.53 with a ɛ3T/ɛ0 of 1518. Additionally, the 1.5 mol% MnO2‐added 0.75PZT–0.25PZN ceramics sintered at 900°C for 4 h also exhibited high piezoelectric properties of Qm=1115, kp=0.50, and ɛ3T/ɛ0=1537.