Influence of Al2O3 nanoparticle doping on depolarization temperature, and electrical and energy harvesting properties of lead-free 0.94(Bi0.5Na0.5)TiO3–0.06BaTiO3 ceramics
作者： Pharatree Jaita , Supalak Manotham , Gobwute Rujijanagul
DOI: 10.1039/D0RA04866F
关键词: Piezoelectricity 、 Ferroelectricity 、 Microstructure 、 Analytical chemistry 、 Doping 、 Raman spectroscopy 、 Grain size 、 Materials science 、 Ceramic 、 Dielectric
摘要: In this research article, the effects of Al2O3 nanoparticles (0–1.0 mol%) on phase formation, microstructure, dielectric, ferroelectric, piezoelectric, electric field-induced strain and energy harvesting properties 0.94(Bi0.5Na0.5)TiO3–0.06BaTiO3 (BNT–6BT) ceramic were investigated. All ceramics have been synthesized by a conventional mixed oxide method. The XRD Raman spectra showed coexisting rhombohedral tetragonal phases throughout entire compositional range. An increase grain size, TF–R, Tm, emax δA values was noticeable when added. Depolarization temperature (Td), which determined thermally stimulated depolarization current (TSDC), tended to with content. good ferroelectric (Pr = 32.64 μC cm−2, Ec 30.59 kV cm−1) large low-field d33 (205 pC N−1) observed for 0.1 mol% ceramic. small additive improved (Smax ). 1.0 had piezoelectric voltage coefficient (g33 32.6 × 10−3 Vm dielectric (er,max 6542, Td 93 °C, TF–R 108 Tm 324 °C 164 K). highest off-resonance figure merit (FoM) 6.36 pm2 N−1 also ceramic, is suggesting that has potential be one promising lead-free candidates further use in applications.
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