Structural and electrical properties of BZT-added BNLT ceramics

Lead free piezoelectric ceramics (1−x)BNLT−xBZT with x=0.00, 0.06, 0.09 and 0.12 were prepared using a two-step mixed oxide method. Dielectric, ferroelectric and piezoelectric properties of the ceramics were improved by the addition of the BZT. XRD results show tetragonal symmetry structure of the B...

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Published inCeramics international Vol. 40; no. 3; pp. 4251 - 4256
Main Authors Kantha, P., Pisitpipathsin, N., Pengpat, K., Eitssayeam, S., Pojprapai, S.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.04.2014
Subjects
C. Dielectric properties
C. Piezoelectric properties
Ceramics
D. BaTiO3 and titanates
D. Perovskites
Dielectric constant
Electrical properties
Ferroelectric materials
Lead free
Optimization
Piezoelectric ceramics
Piezoelectricity
C. Piezoelectric properties
D. BaTiO3 and titanates
C. Dielectric properties
D. Perovskites
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Summary:Lead free piezoelectric ceramics (1−x)BNLT−xBZT with x=0.00, 0.06, 0.09 and 0.12 were prepared using a two-step mixed oxide method. Dielectric, ferroelectric and piezoelectric properties of the ceramics were improved by the addition of the BZT. XRD results show tetragonal symmetry structure of the BNLT–BZT ceramics. It was found that the tetragonality increases with increasing BZT content. The optimum composition is x=0.09, where the maximum values of the piezoelectric constant d33 (~126pC/N) and dielectric constant (~2400) were obtained at room temperature. This BNLT–BZT system can be a promising candidate for lead-free piezoelectric ceramics.
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ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2013.08.089