Large electric field-induced strain in ternary Bi0.5Na0.5TiO3-BaTiO3-Sr2MnSbO6 lead-free ceramics

Influence of Al2O3nanoparticle doping on depolarization temperature, and electrical and energy harvesting properties of lead-free 0.94(Bi0.5Na0.5)TiO3–0.06BaTiO3ceramics

“…The pure BNT-6BT ceramic exhibited a typical buttery-shaped strain loop with S max of 0.21% and d * 33 of 412 pm V À1 where the largest S neg of À0.22% was observed. 6 The S max and d * 33 value of this composition in this work is higher than the S max (0.18%) and d * 33 ð353 pm V À1 Þ values of the 0.94(Bi 0.5 Na 0.5 )TiO 3 -0.06BaTiO 3 ceramic, observed in previous works. Ti has an effective negative charge, which can be compensated by a positively charged oxygen vacancy 55 in order to maintain the overall charge neutrality.…”

“…1,3,34,35 Such phenomena have also been reported in other BNT-based ceramics. 1,3,6,[34][35][36] Sharp T F-R peaks can be clearly seen in the pure BNT-6BT and the doped-ceramics. In this work, the T F-R for the pure BNT-6BT ceramic was 93 C which was close to 86 C the value observed earlier by Gong et al 6 The T F-R was obviously composition-dependent and was found to increase with increasing Al A reason for the increase in 3 max may be due to the Al 3+ ions that can be replaced by Ti 4+ ions on the B-site of the perovskite ABO 3 structure within the BNT-6BT ceramic.…”

“…1,2 BNT is one of the comprehensively studied lead-free perovskite ferroelectric materials, which exhibits a relatively high Curie temperature (T C ¼ 320 C) as well as a high remanent polarization (P r $ 38 mC cm À2 ). 6 BNT has a rhombohedral perovskite structure (R3c) with Na 1+ and Bi 3+ distributed sequentially in Asite. 7 However, high value of the coercive electric eld (E c > 60 kV cm À1 ) and high conductivity are two drawbacks for BNT to become an alternative replacement for PZT.…”

Realizing the invariant electrostrain response and low hysteresis via multicomponent coordination in Pb‐based ceramics

“…In recent years, Bi-based piezoelectric ceramics have become a research hotspot due to their ultrahigh strain response. [12][13][14][15][16][17][18][19][20] At present, ternary relaxor ferroelectric ceramics containing Bi have been successfully synthesized by incorporating Bi-based components into traditional PZ-PT ceramic. Fu and Zuo 21 reported that Bi(Mg 1/2 Ti 1/2 )O 3 (BMT)-PZ-PT ternary ferroelectric ceramics could achieve a maximum strain value of 0.39% under 6 kV mm −1 .…”

Large Strain With Ultra-Low Hysteresis and Enhanced Energy Storage Performance of Mn-Doped 0.65Bi0.5Na0.5TiO3-0.35SrTiO3 Lead-Free Ceramics

“…Among reported lead-free ceramic systems, Na0.5Bi0.5TiO3 (abbreviated as NBT)-based ceramics present giant electric-field induced strain [9][10][11][12][13][14][15][16][17][18][19][20][21][22], which makes NBT-based ceramics to be one of the most promising candidates to replace lead-containing materials. For example, large electric-field-induced strain value of 0.45% was achieved in Na0.5Bi0.5TiO3-BaTiO3-K0.5Na0.5NbO3 (NBT-BT-KNN) ceramic [10].…”