The influences of B-site doping on ferroelectric and energy-storage properties of Bi0.5(Na0.82K0.18)0.5TiO3–LiSbO3 ceramics

Wentao Yang, Sarir Uddin, Arif Zaman, Guangping Zheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Single-phase Bi0.5(Na0.82K0.18)0.5Ti1−xMxO3–0.01LiSbO3 (BNKT–LS-xM) (M = Ta, Nb or Zr, 0 ≤ x ≤ 0.05) lead-free ceramics are prepared by a solid-state reaction method. The influences of Ta5+, Zr4+or Nb5+ doping at B-site of perovskite structures on the crystal structure, chemical structure, ferroelectric and energy-storage properties of BNKT–LS ceramics are systematically investigated. Although the introduction of Ta5+, Zr4+ and Nb5+ at B-site could disturb the long-range ferroelectric ordering, Ta5+ or Nb5+ doping results in excellent thermal stability of the energy-storage density (as large as 0.7 J cm−3) at elevated temperatures (50 °C–200 °C) with a high energy-storage efficiency (>90%). The results demonstrate that the lead-free BNKT–LS-xM ceramics are promising dielectric materials that can be finely tuned for electrical energy storage with high energy storage efficiency and a wide range of operating temperature.

Original languageEnglish
Article number085404
JournalPhysica Scripta
Issue number8
Publication statusPublished - Aug 2022


  • Dielectric capacitors
  • Dielectric energy storage
  • Dielectric properties
  • High-entropy ceramics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Ceramics and Composites
  • Materials Chemistry
  • Electrical and Electronic Engineering


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