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首页> 外文期刊>RSC Advances >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
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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

机译：Al2O3纳米颗粒掺杂对去极化温度的影响，以及无铅0.94（BI0.5NA0.5）TiO3-0.06batiO3陶瓷的电气和能量收集性能

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In this research article, the effects of Al _(2) O _(3) nanoparticles (0–1.0 mol%) on the phase formation, microstructure, dielectric, ferroelectric, piezoelectric, electric field-induced strain and energy harvesting properties of the 0.94(Bi _(0.5) Na _(0.5) )TiO _(3) –0.06BaTiO _(3) (BNT–6BT) ceramic were investigated. All ceramics have been synthesized by a conventional mixed oxide method. The XRD and Raman spectra showed coexisting rhombohedral and tetragonal phases throughout the entire compositional range. An increase of the grain size, T _(F–R) , T _(m) , ε _(max) and δ _(A) values was noticeable when Al _(2) O _(3) was added. Depolarization temperature ( T _(d) ), which was determined by the thermally stimulated depolarization current (TSDC), tended to increase with Al _(2) O _(3) content. The good ferroelectric properties ( P _(r) = 32.64 μC cm ~(?2) , E _(c) = 30.59 kV cm ~(?1) ) and large low-field d _(33) (205 pC N ~(?1) ) values were observed for the 0.1 mol% Al _(2) O _(3) ceramic. The small Al _(2) O _(3) additive improved the electric field-induced strain ( S _(max) and ). The 1.0 mol% Al _(2) O _(3) ceramic had a large piezoelectric voltage coefficient ( g _(33) = 32.6 × 10 ~(?3) Vm N ~(?1) ) and good dielectric properties ( ε _(r,max) = 6542, T _(d) = 93 °C, T _(F–R) = 108 °C, T _(m) = 324 °C and δ _(A) = 164 K). The highest off-resonance figure of merit (FoM) for energy harvesting of 6.36 pm ~(2) N ~(?1) was also observed for the 1.0 mol% Al _(2) O _(3) ceramic, which is suggesting that this ceramic has potential to be one of the promising lead-free piezoelectric candidates for further use in energy harvesting applications.
机译：在本研究制品中，Al _（2）O _（3）纳米颗粒（0-1.0mol％）对相的相，微观结构，电介质，铁电，压电，电场诱导的应变和能量收集性能的影响研究了0.94（Bi _（0.5）Na _（0.5））TiO _（3）-0.06batiO _（3）（BNT-6BT）陶瓷。所有陶瓷都通过常规的混合氧化物方法合成。 XRD和拉曼光谱显示在整个成分范围内共存菱形和四方相。当添加Al _（2）O _（3）时，晶粒尺寸的增加，T _（F-R），T _（M），ε_（max）和δ_（a）值是明显的。通过热刺激的去极化电流（TSDC）测定的去极化温度（T _（D））倾向于与Al _（2）O _（3）含量增加。良好的铁电性能（P _（r）=32.64μccm〜（Δ2），e_（c）= 30.59 kV cm〜（Δ1））和大的低场d _（33）（205 pc n〜 （α1））对于0.1mol％Al _（2）O _（3）陶瓷观察到值。小Al _（2）O _（3）添加剂改进了电场诱导的应变（S _（MAX）和）。 1.0mol％Al _（2）O _（3）陶瓷具有大的压电电压系数（G _（33）= 32.6×10〜（α3）Vm n〜（α1））和良好的电介质特性（ε _（r，max）= 6542，t _（d）= 93°C，t _（f-r）= 108°C，t _（m）= 324°C和δ_（a）= 164k） 。对于1.0mol％Al _（2）o _（3）陶瓷，还观察到用于能量收集的最高谐振（FOM）的优点（FOM）的优点（FOM）的优点（2）N〜（α1），这是暗示的该陶瓷具有可能是有前途的无铅压电候选者之一，用于进一步用于能量收集应用。

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