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Effects of Bi2O3 additive on sintering process and dielectric, ferroelectric, and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics

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
Artikel, Bibliographie

Kurzbeschreibung (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.

Typ des Eintrags: Artikel
Erschienen: 2016
Autor(en): Hayati, Raziye ; Bahrevar, Mohammed Ali ; Edadzadeh, Touradj ; Rojas, Virginia ; Novak, Nikola ; Koruza, Jurij
Art des Eintrags: Bibliographie
Titel: Effects of Bi2O3 additive on sintering process and dielectric, ferroelectric, and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics
Sprache: Englisch
Publikationsjahr: 10 Juni 2016
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of the European Ceramic Society
Jahrgang/Volume einer Zeitschrift: 36
(Heft-)Nummer: 14
DOI: 10.1016/j.jeurceramsoc.2016.05.033
URL / URN: http://www.sciencedirect.com/science/article/pii/S0955221916...
Kurzbeschreibung (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.

Freie Schlagworte: Lead free BCZT Bi2O3 addition Microstructure Piezoelectric Relaxor
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften
Hinterlegungsdatum: 27 Jun 2016 05:40
Letzte Änderung: 27 Jun 2016 05:40
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