Quenching effects on electrical properties of Cu-doped (Bi1/2Na1/2)TiO3-based solid solution ceramics
Source abstract
Abstract
Quenching effects on electrical and piezoelectric properties were investigated for Cu-doped (Bi1/2Na1/2)TiO3 (BNT)-based solid solution systems, 0.90(Bi1/2Na1/2)TiO3–0.06BaTiO3–0.04(Bi1/2Li1/2)TiO3 (BNLBT), aiming to increase the depolarization temperature Td without deteriorating the piezoelectric properties. A dense BNLBT ceramics doped with CuO 1.0 wt% was fabricated by a conventional ceramic fabrication process with a low-sintering temperature at 940 °C, which is 200 °C lower than those for non-doped BNLBT ceramics. In addition, the CuO-doped BNLBT ceramic was quenched immediately after the sintering process at 940 °C, and the piezoelectric constant and Td were measured. The Td values of CuO-doped BNLBT systems with and without quenching were 143 and 78 °C, respectively. This showed that Td Cu-doped ceramics increased by approximately 60 °C due to quenching. In addition, the electromechanical coupling factors k33 of quenched and non-quenched Cu-doped BNLBT ceramics were approximately 0.58, showing no significant deterioration of piezoelectric activity caused by quenching.
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Multiferroics and related materials · Dielectric materials and actuators
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
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