Buffered template strategy for improving texture quality and piezoelectric properties of heterogeneous templated grain growth (K,Na)NbO3-based ceramics through interface engineering

Seonhwa Park, Jongmoon Jang, Cheol Woo Ahn, Byung Dong Hahn, Woon Ha Yoon, Jung Woo Lee, Jong Jin Choi, Yuho Min

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Notwithstanding the advances in improving piezoelectric properties through templated grain growth, insights into the mechanical stress and microstructure of such materials are necessary. This is because the properties can be significantly varied depending on these parameters. Constructing heterostructure templates (2D–0D), in which the 0D nanoparticles have compositions similar to that of matrix powders, has significant potential in improving the above aspects. Here, BaTiO3 (BT) templates and elements-doped (K,Na)NbO3 (KNN) matrix powders were selected. Heterostructure BT (h-BT) templates were prepared by nucleation and growth of dopant-free KNN nanoparticles on bare BT. h-BT enabled a reduction in the mechanical stress at the interfaces within textured ceramics (h-BT-KNN), leading to larger grain growth and a higher texturing degree than those of textured ceramics (BT-KNN) fabricated using bare BT. The h-BT-KNN exhibited the enhanced piezoelectric constant (d33) by ∼170% and ∼600% compared to those of the BT-KNN and nontextured ceramics, respectively.

Original languageEnglish
Pages (from-to)1932-1940
Number of pages9
JournalJournal of the European Ceramic Society
Volume43
Issue number5
DOIs
StatePublished - May 2023

Keywords

  • (K
  • Heterostructure
  • Interface engineering
  • Na)NbO
  • Piezoelectric
  • Templated grain growth

Fingerprint

Dive into the research topics of 'Buffered template strategy for improving texture quality and piezoelectric properties of heterogeneous templated grain growth (K,Na)NbO3-based ceramics through interface engineering'. Together they form a unique fingerprint.

Cite this