Temperature-dependent energy storage performance of La2O3-doped(1−x) Bi0.5(Na0.84K0.16)0.5TiO3–xSrTiO3 multifunctional ceramics for piezoelectric sensor applications

M. Antony Lilly Grace, A. Suvitha, Herri Trilaksana, Venkatraj Athikesavan, Koyada Prathap, A. Judith Jayarani

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, La2O3-doped (1 − x) Bi 0.5(Na0.84K0.16)0.5TiO3–xSrTiO3 ceramics where x varies from 0.000 to 0.030 mol%, synthesized by solid-state reaction technique. The La2O3-doped BNKT–ST ceramics exhibit pure perovskite structures with a tetragonal (P4bm) phase structure. Computational structural properties of ceramics were computed VESTA program. The surface morphology of average grain size has decreased with increasing the substitution of La2O3 ions into the BNKT–ST ceramics. A decrease in the remnant polarization and the coercive field with an increase in the La2O3 concentration is attributed to the change in long-range ferroelectric order. When the La2O3 amount up to 0.020 mol%, doped samples show good piezoelectric coefficient (d 33) exhibiting a maximum of ~ 187 pC/N. The prepared sample shows an energy storage density and efficiency of 0.90 J/cm3 and η (70%) at 0.97BNKT-0.030ST composition. La2O3-doped BNKT–ST ceramic optimistic application prospects in the field of high-power density energy storage capacitor and piezoelectric sensor applications. Graphical abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)4902-4912
Number of pages11
JournalJournal of Materials Research
Volume38
Issue number22
DOIs
Publication statusPublished - 28 Nov 2023

Keywords

  • Ceramics
  • Consumption and production
  • Energy storage
  • Ferroelectric
  • High temperature
  • La-BNKT–ST
  • Piezoelectric

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