(Pb,Sm)(Zr,Sn,Ti)O₃ Multifunctional Ceramics with Large Electric‐Field‐Induced Strain and High‐Energy Storage Density

Abstract

Recently, the progress of integrated electronics has led to a strong demand for materials and devices with multiple functions. In this study, we achieved Pb0.985Sm0.01 (Zr0.64Sn0.28Ti0.08)O3 (PSZST) multifunctional ceramics which showed simultaneously large electric‐field‐induced strain (0.63%) and high recoverable energy density (1.743 J/cm3) at room temperature. Moreover, the strain and recoverable energy density exhibited a slight frequency fluctuation in the frequency range of 1–10 Hz. Their variations were less than 8% and 1.3% and the values were all higher than 0.58% and 1.722 J/cm3, respectively. The large strain, high‐energy density, and their good frequency stability in a wide range indicate that the PSZST ceramic is quite promising for application in multifunctional devices.

Bismuth ferrite-based lead-free ceramics and multilayers with high recoverable energy density

“…Lead-based dielectric ceramics have already proven to have potential in the application of energy-storage capacitors, with high Wrec (6.4 J/cm -3 ) reported in Ladoped Pb(Zr,Ti)O3-based AFE ceramics fabricated by spark plasma sintering (SPS). [10][11][12][13][14][15] However, environmental issues, health concerns and regulations against hazardous substances in electric and electronic equipment have stimulated research in lead-free materials for energy-storage. [16][17][18] Lead-free energy storage ceramics such as BaTiO3 (BT), (Bi0.5Na0.5)TiO3 (BNT) and (K0.5Na0.5)NbO3…”

Multifunctional antiferroelectric MLCC with high‐energy‐storage properties and large field‐induced strain

“…According to Pan's theory, the variation (▵ V / V ) in the unit‐cell volume during AFE‐ferroelectric (FE) phase transition process can be expressed by the formula:where P ind is the induced polarization by the electric field, Q h is the electrostrictive coefficient, and Ω is the coupling coefficient between the anti‐parallel dipoles in AFEs. It means that more stable AFE phase will lead to larger field‐induced strains . At the same time, the stable AFE phase is also companied by larger AFE‐FE phase switching field (EF), which results in improved energy‐storage density.…”

Pulse discharge properties of PLZST antiferroelectric ceramics compared with ferroelectric and linear dielectrics

“…3(c) illustrates the capacitance C of PLZST10 versus E. At low field the value of C only increase slightly, but when E approaches 8kV/mm, the value of C grows rapidly due to the AFE-FE phase transition. 16,17 According to the expression of I max and equation (6), the increase of both E and C will result in a rise of increase rate of I max . Above 8 kV/mm, the field-induced FE phase becomes stable.…”

“…Generally, the energy density of AFEs is higher than those of FEs and linear dielectrics because the total stored charges can be released due to the absence of any remnant polarization. 3 Many efforts [4][5][6][7] have been made to investigate the energy store performance of these dielectric materials and improve the energy density.…”