Controlled colossal polarization originating in the Li-ion conductor-dielectric interface

Takashi Teranishi, Yuki Nishikori, Mika Yoneda, Akira Kishimoto

Research output: Contribution to journalArticlepeer-review

Abstract

A novel colossal polarization architecture generated at the fast Li-ion conductor-dielectric interface is proposed. A fast Li-ion conductor, La0.57Li0.29TiO3 (LLT), is utilized as the conductive core material, while the ferroelectric barium titanate (BaTiO3; BT) was coated onto the LLT as the shell layer via a liquid phase reaction. After densification of the composites, the shell BT fully transforms into the interdiffusion layer, i.e. (Ba, Li, La)TiO3 (BLLT). The BLLT effectively hinders Li diffusion, leading to a colossal polarization at the core-shell interface. Consequently, the optimized BT-LLT achieves dielectric characteristics at 1 kHz with permittivity of 3.28 104.

Original languageEnglish
Article number040905
JournalJapanese Journal of Applied Physics
Volume60
Issue number4
DOIs
Publication statusPublished - Apr 2021

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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