Enhanced piezoelectric properties of barium titanate-potassium niobate solid solution system ceramics by MPB engineering

Shigehito Shimizu, Petr Pulpan, Nobuhiro Kumada, Daisuke Tanaka, Masahito Furukawa, Yoshihiro Kuroiwa, Tohru Suzuki, Tetsuo Uchikoshi, Satoshi Wada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

Barium titanate (BaTiO3, BT) - potassium niobate (KNbO 3, KN) solid solution system (0.5BT-0.5KN) ceramics with various microstructures were prepared by conventional sintering method and two-step sintering method using BT and KN nanoparticles. Their microstructures were investigated using X-ray diffraction (XRD) measurement and scanning electron microscopy (SEM), and it was confirmed that two ferroelectric phases, i.e., BT-rich tetragonal and KN-rich orthorhombic phases, always coexisted for all ceramics, which suggested that 0.5BT-0.5KN ceramics had "pseudo- morphotropic phase boundary (MPB)" structure. Thus, the control of the interface area between two phases was important to enhance piezoelectric property. Finally, their piezoelectric property was measured, and the apparent piezoelectric constant d33* increased with increasing interface area.

Original languageEnglish
Title of host publicationElectroceramics in Japan XIII
PublisherTrans Tech Publications Ltd
Pages11-14
Number of pages4
ISBN (Print)9780878492640
DOIs
Publication statusPublished - 2010 Jan 1
Externally publishedYes

Publication series

NameKey Engineering Materials
Volume445
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Keywords

  • Barium titanate
  • Interface region
  • MPB engineering
  • Piezoelectric property
  • Potassium niobate

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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