Effect of MnO2 on the piezoelectric properties of the 0.75Pb(Zr0.47Ti0.53)O3-0.25Pb(Zn 1/3Nb2/3)O3 ceramics

Hwi Yeol Park, Chan Hee Nam, In Tae Seo, Jae Hong Choi, Sahn Nahm, Hyeung Gyu Lee, Kwang Jin Kim, Seong Min Jeong

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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 Mn 4+ 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 ε3 T0 of 1518. Additionally, the 1.5 mol% MnO 2-added 0.75PZT-0.25PZN ceramics sintered at 900°C for 4 h also exhibited high piezoelectric properties of Qm=1115, k p=0.50, and ε3T0=1537.

Original languageEnglish
Pages (from-to)2537-2540
Number of pages4
JournalJournal of the American Ceramic Society
Issue number9
Publication statusPublished - 2010 Sep

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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