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Effects of Zn Substitution on Dielectric and Piezoelectric Properties of (Na$_{0.54}$K$_{0.46}$)$_{0.96}$Li$_{0.04}$(Nb$_{0.90}$Ta$_{0.10}$)O$_{3}$ Ceramics
| Content Provider | Scilit |
|---|---|
| Author | Byeon, Sunmin Yoo, Juhyun |
| Copyright Year | 2012 |
| Description | Journal: Japanese Journal of Applied Physics In this study, in order to develop lead-free composition ceramics for piezoelectric actuator and sensor applications, $(Na_{0.54}K_{0.46})_{0.96}Li_{0.04}(Nb_{0.90}Ta_{0.10})_{1-2x/5}Zn_{x}O_{3}$ (x = 0–1.5 mol %) composition ceramics were fabricated by a conventional sintering technique at 1110 °C for 5 h. The piezoelectric properties of resultant ceramics were studied with a special emphasis on the influence of Zn-substitution amount. The crystal structure of the specimen exhibited a pure perovskite phase with the coexistence of two phases (orthorhombic and tetragonal phases). However, the phases included tetragonal-rich phases to some extent. The scanning electron microscopy (SEM) images indicated that grain size increased with increasing the content of Zn substitution. High physical properties, namely, piezoelectric constant $d_{33}$ = 265 pC/N, electromechanical coupling factor $k_{p}$ = 47.5%, dielectric constant $ε_{r}$ = 1223, and measured density ρ= 4.84 $g/cm^{3}$ were obtained from the composition ceramic with x = 0.5 mol %. The mechanical quality factor $(Q_{m}$) was improved from 54 of pure $(Na_{0.54}K_{0.46})_{0.96}Li_{0.04}(Nb_{0.90}Ta_{0.10})O_{3}$ (abbreviated as NKLNT) to 106 by 1.5 mol % Zn substitution. The results reflect that the material is a promising candidate for lead-free high-performance piezoelectric device applications, such as piezoelectric actuators and sensors. |
| Related Links | http://iopscience.iop.org/article/10.1143/JJAP.51.09MD12/pdf |
| ISSN | 00214922 |
| e-ISSN | 13474065 |
| DOI | 10.1143/jjap.51.09md12 |
| Journal | Japanese Journal of Applied Physics |
| Issue Number | 9S2 |
| Volume Number | 51 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2012-09-20 |
| Access Restriction | Open |
| Subject Keyword | Journal: Japanese Journal of Applied Physics Business and Management |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Engineering |
