Hayati, Raziye ; Bahrevar, Mohammed Ali ; Edadzadeh, Touradj ; Rojas, Virginia ; Novak, Nikola ; Koruza, Jurij (2016)
Effects of Bi2O3 additive on sintering process and dielectric,
ferroelectric, and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics.
In: Journal of the European Ceramic Society, 36 (14)
doi: 10.1016/j.jeurceramsoc.2016.05.033
Article, Bibliographie
Abstract
Lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) piezoceramics with Bi2O3 additive were synthesized using solidstate ceramic processing. Various amounts of Bi2O3 (0.05, 0.1, 0.5, and 1.0 mol%) were added after calcination, milled, compacted, and sintered with no compensation at A- or B-sites. Addition of up to 0.5 mol% Bi2O3 was found to greatly enhance the densification and increase the piezoelectric properties,while higher amounts decreased the grain size and induced relaxor-like electrical behavior, obeying the Vogel-Fulcher model. The highest properties were obtained for the BCZT with 0.1 mol% Bi2O3 sintered at 1350 ◦C: d33 = 325 pC/m, d33* = 509 pm/V (at 3 kV/mm), kp = 0.42, and Pr = 10.4 °C/cm2. The microstructure, phase composition, and local structure were investigated by scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. The appearance of the A1g vibration mode in the Raman spectra and the shift of diffraction peaks to lower 2 Theata values indicate the incorporation of Bi3+ into the B-site of the perovskite BCZT structure.
| Item Type: | Article |
|---|---|
| Erschienen: | 2016 |
| Creators: | Hayati, Raziye ; Bahrevar, Mohammed Ali ; Edadzadeh, Touradj ; Rojas, Virginia ; Novak, Nikola ; Koruza, Jurij |
| Type of entry: | Bibliographie |
| Title: | Effects of Bi2O3 additive on sintering process and dielectric, ferroelectric, and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics |
| Language: | English |
| Date: | 10 June 2016 |
| Journal or Publication Title: | Journal of the European Ceramic Society |
| Volume of the journal: | 36 |
| Issue Number: | 14 |
| DOI: | 10.1016/j.jeurceramsoc.2016.05.033 |
| URL / URN: | http://www.sciencedirect.com/science/article/pii/S0955221916... |
| Abstract: | Lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) piezoceramics with Bi2O3 additive were synthesized using solidstate ceramic processing. Various amounts of Bi2O3 (0.05, 0.1, 0.5, and 1.0 mol%) were added after calcination, milled, compacted, and sintered with no compensation at A- or B-sites. Addition of up to 0.5 mol% Bi2O3 was found to greatly enhance the densification and increase the piezoelectric properties,while higher amounts decreased the grain size and induced relaxor-like electrical behavior, obeying the Vogel-Fulcher model. The highest properties were obtained for the BCZT with 0.1 mol% Bi2O3 sintered at 1350 ◦C: d33 = 325 pC/m, d33* = 509 pm/V (at 3 kV/mm), kp = 0.42, and Pr = 10.4 °C/cm2. The microstructure, phase composition, and local structure were investigated by scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. The appearance of the A1g vibration mode in the Raman spectra and the shift of diffraction peaks to lower 2 Theata values indicate the incorporation of Bi3+ into the B-site of the perovskite BCZT structure. |
| Uncontrolled Keywords: | Lead free BCZT Bi2O3 addition Microstructure Piezoelectric Relaxor |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 27 Jun 2016 05:40 |
| Last Modified: | 27 Jun 2016 05:40 |
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