Dielectric, Ferroelectric, Energy Storage, and Pyroelectric Properties of Mn-Doped (Pb0.93La0.07)(Zr0.82Ti0.18)O3 Anti-Ferroelectric Ceramics

Abstract

In this study, the dielectric and polarization properties of manganese (Mn% = 0.0, 0.1, 0.2, 0.5) doped (Pb 0.93 La 0.07 )(Zr 0.82 Ti 0.18 )O 3 (PLZT 7/82/18) anti-ferroelectric ceramics were studied for energy storage capacitor and pyroelectric applications. A systematic investigation demonstrated that the electric properties of PLZT 7/82/18 ceramics are affected significantly by the Mn-doping content. A maximum dielectric constant of ~2,128 at 1 kHz was found for 0.1% Mn-doped PLZT ceramics with a low dielectric loss of 0.018. The bipolar polarization versus electric field (P-E) hysteresis loops were traced for all compositions showing a typical anti-ferroelectric nature. The breakdown field was found to decrease with Mn-doping. The energy storage density and efficiency were found to be 460 J/cm 3 and ~63%, respectively, for 0.2% Mn-doped PLZT ceramics. The pyroelectric coefficient of PLZT ceramics shows an increase based on the amount of Mn-doping.

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

“…Qiao and co-workers reported slimmer P–E loops giving a W rec ∼ 3.38 J cm –3 in (Pb 0.895 La 0.07 )­(Zr x Ti 1– x )­O 3 ceramics by changing the Zr/Ti ratio (Figure ), which was attributed to the reduction of tolerance factor and “enhancement of antiferroelectricity” . Mn doping is also suggested to improve W rec of PLZT by “enhancing antiferroelectricity”. − …”

“…When Pb ions are replaced by ≤30 mol % La on the A-site in accordance with a lead vacancy ( V pb .. ) ionic compensation model, an orthorhombic AFE phase similar to PbZrO 3 occurs for Zr rich compositions. However, only PLZT with <10 mol % La is typically utilized for energy storage applications − since higher concentrations have lower polarization and therefore lower W rec . Li and co-workers prepared (Pb 0.97 La 0.02 )­(Zr 0.95 Ti 0.05 )­O 3 ceramics via a solid-state reaction route, yielding W rec ∼ 0.83 J cm –3 and η ∼ 70% under an electric field of 55 kV cm –1 .…”

“…Many recent publications have focused on optimization of energy storage in lead-free AN-based materials, , although similar strategies date back to early studies of lead-based PLZT and PLZST AFE ceramics. ,,− The most comprehensive study of AN AFE ceramics was performed by Lu and co-workers in which they used A and B-site substitutions to develop, Ag 0.97 Nd 0.01 Nb 0.80 Ta 0.20 O 3 which yielded W rec ∼ 6.5 J cm –3 at 370 kV cm –1 with η∼ 71%, Figure . In their study, Lu and co-workers defined several key points required to optimize AN-based ceramics: Optimization of P max through local strain/field coupling around the smaller (with respect to Ag) Nd ion the A-site and its compensating V A , Figure a. Stabilization of the AFE structure through a combination of Nd and Ta doping which leads the induced AFE/FE transition to higher fields.…”

PbZrO3‐Based Anti‐Ferroelectric Thin Films for High‐Performance Energy Storage: A Review

“…[95] Kumar et al discovered that the energy storage performance of (Pb 0.93 La 0.07 )(Zr 0.82 Ti 0.18 )O 3 antiferroelectric ceramics can be improved by doping Mn element. [96] Similarly, it had the same effects to dope Mn element in anti-ferroelectric thin films and relaxor ferroelectric thin film. [97,98] Kumar et al prepared Mn-doped (Pb 0.93 La 0.07 )(Zr 0.82 Ti 0.18 )O 3 anti-ferroelectric films by aerosol deposition method (Figure 8a).…”

Progress in lead-free piezoelectric nanofiller materials and related composite nanogenerator devices

“…[203][204][205][206] Nonetheless, we will only focus on the eld of energy harvesting devices in this review because the energy storage devices are directly related to the dielectric and ferroelectric physics, rather than piezoelectric and electromechanical couplings. [206][207][208][209][210][211] Hence, we will discuss piezoelectric energy harvesters based on lead-free piezoelectric nanoparticles and representative composite design strategies in this part.…”