- MnO2 as an Effective Sintering Aid for Enhancing Piezoelectric Properties of (K,Na)NbO3 Ceramics
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Seong-Kyu Jeong, In-Ki Hong, Nam-Binh Do, Vu Diem Ngoc Tran, Seong-Youl Cho, Weon Pil Taib, Jae-Shin Lee
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J Korean Powder Metall Inst. 2010;17(5):399-403.
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DOI: https://doi.org/10.4150/KPMI.2010.17.5.399
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- The effects of MnO_2 doping on the crystal structure, ferroelectric, and piezoelectric properties of (K,Na)NbO_3 (KNN) ceramics have been investigated. MnO_2 was found to be effective in enhancing the densification and grain growth during sintering. X-ray diffraction analysis indicated that Mn ions substituted B-site Nb ions up to 2 mol%, however, further doping induced unwanted secondary phases. In comparison with undoped KNN ceramics, the well developed microstructure and the substitution to B-sites in 2 mol% Mn-doped KNN ceramics resulted in significant improvements in both piezoelectric coupling coefficient and electromechanical quality factor.
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Citations
Citations to this article as recorded by  - Further Enhancing Piezoelectric Properties by Adding MnO2 in AgSbO3‐Modified (Li,K,Na)(Nb,Ta)O3 Lead‐Free Piezoceramics
Qing Liu, Fang‐Yuan Zhu, Lei Zhao, Ke Wang, Longtu Li, Jing‐Feng Li, W. Jo
Journal of the American Ceramic Society.2016; 99(11): 3670. CrossRef
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