Hot-stage transmission electron microscopy study of (Na, K)NbO3 based lead-free piezoceramics

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

17 Scopus Citations
View graph of relations

Author(s)

  • Shengbo Lu
  • Zhengkui Xu
  • K. W. Kwok
  • Helen L. W. Chan

Detail(s)

Original languageEnglish
Article number042904
Journal / PublicationApplied Physics Letters
Volume105
Issue number4
Publication statusPublished - 28 Jul 2014

Link(s)

Abstract

Hierarchical nanodomains assembled into micron-sized stripe domains, which is believed to be associated with outstanding piezoelectric properties, were observed at room temperature in a typical lead free piezoceramics, (Na0.52K0.48-x)(Nb0.95-xTa0.05)-xLiSbO3, with finely tuned polymorphic phase boundaries (x 0.0465) by transmission electron microscopy. The evolution of domain morphology and crystal structure under heating and cooling cycles in the ceramic was investigated by in-situ hot stage study. It is found that the nanodomains are irreversibly transformed into micron-sized rectangular domains during heating and cooling cycles, which lead to the thermal instability of piezoelectric properties of the materials.

Research Area(s)

Citation Format(s)

Hot-stage transmission electron microscopy study of (Na, K)NbO3 based lead-free piezoceramics. / Lu, Shengbo; Xu, Zhengkui; Kwok, K. W. et al.
In: Applied Physics Letters, Vol. 105, No. 4, 042904, 28.07.2014.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

Download Statistics

No data available