Dielectric and ferroelectric study of KNN modified NBT ceramics synthesized by microwave processing technique
Source abstract
Abstract
Abstract Morphotropic phase boundary (MPB) composition, 0.93Na 0.5 Bi 0.5 TiO 3 –0.07K 0.5 Na 0.5 NbO 3 /NBT–KNN was synthesized by microwave heating. The optimized calcination conditions for single perovskite phase formation were 800 °C for 40 min, whereas the sintering was carried out at 1150 °C for 20, 30 and 40 min. The MPB composition, sintered for 30 min, showed better properties: nearly uniform and larger grain size of ∼2.52 μm, room temperature (RT) dielectric constant ( e r ) ∼1180 at 1 kHz, a relatively high bulk density ( ρ ) ∼5.49 g/cc, remnant polarization (2 P r ) ∼3.3μC/cm 2 and coercive field ( E c ) ∼5.8 kV/cm. Diffuse phase transition was observed for all the ceramics with highest diffusivity factor, γ ∼1.65 in MPB composition sintered for 30 min.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
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