抄録
PZT-based piezoelectric thin films will make better piezoelectric devices including piezoelectric energy harvesting (EH) power MEMS, when the piezoelectric thin films show high electromechanical coupling and/or high piezoelectric constants with low permittivity. The piezoelectric thin films are mostly polycrystalline structure with high piezoelectric constants and high dielectric constants, i.e. ε*=300-1300 and e31,f = -8 ∼ - 12C/m2. Recently we have found thin films of single c-domain/single crystal PZT-based ternary perovskite, Pb(Mn,Nb)-PZT, exhibit exotic properties, i.e. high coupling and/or high piezoelectric constants with low dielectric constants opposed to the PZT-based thin films. The relative dielectric constants are as low as 100 with e31,f = -12 C/m 2. The low dielectric constants achieve high values of Figures of Merit for the EH-MEMS. This paper will discuss on the origin of the exotic dielectric and piezoelectric properties of the single c-domain/single crystal thin films in comparison with bulk PZT-based ceramics.
本文言語 | English |
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ページ | 69-72 |
ページ数 | 4 |
DOI | |
出版ステータス | Published - 2013 |
外部発表 | はい |
イベント | 2013 Joint IEEE International Symposium on Applications of Ferroelectric and Workshop on Piezoresponse Force Microscopy, ISAF/PFM 2013 - Prague 4, Czech Republic 継続期間: 2013 7月 21 → 2013 7月 25 |
Other
Other | 2013 Joint IEEE International Symposium on Applications of Ferroelectric and Workshop on Piezoresponse Force Microscopy, ISAF/PFM 2013 |
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国/地域 | Czech Republic |
City | Prague 4 |
Period | 13/7/21 → 13/7/25 |
ASJC Scopus subject areas
- 電子工学および電気工学