Effect of Fe3+ doping in Bi0.5Na0.5TiO3 sintered at low temperature
Abstract
Piezoelectric ceramics of composition Pb[TixZr1-x]O3 (PZT) are widely used because of their excellent properties. However, they are highly polluting, due to their lead content. In this work, the dielectric properties of lead-free piezoelectric potential Bi0.5Na0.5TiO3 (BNT) doped with different Fe3+ contents, sintered at low temperature, are analyzed. The synthesis and processing was carried out by high-energy mechanical milling and subsequent sintering at 900 °C. X-ray diffraction results confirm the BNT synthesis with rhombohedral crystal structure for the whole range of Fe3+ substitution. Additionally, the relative permittivity of the doped samples were found to be in the range of 400 to 500 showed higher stability over the whole frequency range, compared to the undoped BNT, without observing a clear trend as a function of Fe3+ content. The dielectric losses and electrical conductivity reveal the obtaining of materials with potential for piezoelectric materials at low frequencies.
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References
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Copyright (c) 2023 Luis Alberto Esquivel Arias, Ana María Bolarín Miró, Félix Sánchez de Jesús, Claudia Alicia Cortes Escobedo, Luis Gerardo Betancourt Cantera
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