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Effect of MnO2 on the Piezoelectric Properties of the 0.75Pb(Zr0.47Ti0.53)O-3-0.25Pb(Zn1/3Nb2/3)O-3 Ceramics
- Authors
- Park, Hwi-Yeol; Nam, Chan-Hee; Seo, In-Tae; Choi, Jae-Hong; Nahm, Sahn; Lee, Hyeung-Gyu; Kim, Kwang-Jin; Jeong, Seong-Min
- Issue Date
- 9월-2010
- Publisher
- WILEY
- Citation
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.93, no.9, pp.2537 - 2540
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY
- Volume
- 93
- Number
- 9
- Start Page
- 2537
- End Page
- 2540
- ISSN
- 0002-7820
- Abstract
- MnO2 was added to 0.75Pb(Zr0.47Ti0.53)O-3-0.25Pb(Zn1/3Nb2/3)O-3 (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 Q(m) 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 k(p) of 0.53 with a epsilon T-3/epsilon(0) of 1518. Additionally, the 1.5 mol% MnO2-added 0.75PZT-0.25PZN ceramics sintered at 900 degrees C for 4 h also exhibited high piezoelectric properties of Q(m)=1115, k(p)=0.50, and epsilon T-3/epsilon(0)=1537.
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