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Microstucture, dielectric properties and impedance analysis of NaBixTi6O12.5+1.5x lead-free ceramics.
- Source :
- Journal of Materials Science: Materials in Electronics; Jun2019, Vol. 30 Issue 11, p10821-10829, 9p
- Publication Year :
- 2019
-
Abstract
- Lead-free NaBi<subscript>x</subscript>Ti<subscript>6</subscript>O<subscript>12.5+1.5x</subscript> ceramics (x = 0.98, 0.99, 1.01, 1.02) with a pseudo-perovskite structure were prepared via the traditional solid-phase reaction. The structure, dielectric properties and impedance spectroscopy of the NaBi<subscript>x</subscript>Ti<subscript>6</subscript>O<subscript>12.5+1.5x</subscript> ceramics were investigated in detail. X-ray diffraction patterns reveal that all of the prepared ceramics have a single phase and the scanning electron microscope confirms the well-growth performance of the ceramics. The dielectric constant and dielectric loss show great stability with a wide temperature range. It can be learned that the resistance, the maximum Debye peak, and the corresponding capacitance simultaneously decrease with increasing temperature by analysing Z* plots. The active energy of the NaBi<subscript>x</subscript>Ti<subscript>6</subscript>O<subscript>12.5+1.5x</subscript> ceramics (x = 0.98, 0.99, 1.01, 1.02) are respectively 0.67, 0.56, 1.34 and 1.37 eV, meanwhile, there is no phase transition point in 25–750 °C. The results demonstrate that the electrical properties of the NaBi<subscript>x</subscript>Ti<subscript>6</subscript>O<subscript>12.5+1.5x</subscript> lead-free ceramics can be well tuned by varying the Bi quantity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 30
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 136694419
- Full Text :
- https://doi.org/10.1007/s10854-019-01425-7