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<p>A facile hydrothermal strategy is proposed in the study for performance improvement of barium titanate (BaTiO<sub>3</sub>, BTO) powder synthesized via solid-state method. Benefiting from the continuous dissolution–recrystallization equilibrium reaction under hydrothermal conditions, the modified powders exhibit significantly improved uniformity and dispersibility, while maintaining high tetragonality and minimal hydroxyl defects. As a result, the ceramics derived from the modified BTO-030 and BTO-040 powders show fine-grained microstructures along with notably improved dielectric properties. Specifically, the room-temperature dielectric constants increase from 3649 to 4765 for modified BTO-030 and from 3863 to 4463 for modified BTO-040, demonstrating that the proposed modification strategy effectively optimizes BTO powders for MLCC applications.</p>

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A facile hydrothermal strategy for performance enhancement of BaTiO3 powders synthesized by solid-state method

  • 期刊论文

  • 发表日期：

    2026年5月4日

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  • Yunyun Zhao,
  • Shining Zhang,
  • Yiqi sang,
  • Xiuyun Zhang,
  • Shenfeng Long,
  • Tingting Wei,
  • Guisheng Zhu,
  • Huarui Xu

摘要

A facile hydrothermal strategy is proposed in the study for performance improvement of barium titanate (BaTiO3, BTO) powder synthesized via solid-state method. Benefiting from the continuous dissolution–recrystallization equilibrium reaction under hydrothermal conditions, the modified powders exhibit significantly improved uniformity and dispersibility, while maintaining high tetragonality and minimal hydroxyl defects. As a result, the ceramics derived from the modified BTO-030 and BTO-040 powders show fine-grained microstructures along with notably improved dielectric properties. Specifically, the room-temperature dielectric constants increase from 3649 to 4765 for modified BTO-030 and from 3863 to 4463 for modified BTO-040, demonstrating that the proposed modification strategy effectively optimizes BTO powders for MLCC applications.