Domain switching characteristics of lead zirconate titanate piezoelectric ceramics during mechanical compressive loading

Mitsuhiro Okayasu, Kazuto Sato, Yoko Kusaba

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

To better understand the domain switching characteristics of lead zirconate titanate (PZT) ceramics, the orientations of domains have been directly investigated during loading and unloading using various experimental techniques. Upon loading, linear and non-linear fracture mechanics of the PZT ceramics are observed. The slope of the stress-strain response is attributed mainly to lattice strain and domain switching strain. During the loading process, electrical activity also occurs several times in the PZT ceramics. This activity is related to a lightning-like phenomenon and consists of a bright flash with a click. This electrogenerative event is caused by severe domain switching. The characteristics of domain switching and reverse switching are detected during the loading and unloading processes. The amount of domain switching depends on the grain, due to different stress levels. In addition, two patterns of 90° domain switching systems are characterized, namely (i) 90° turn about the tetragonal c-axis and (ii) 90° rotation of the tetragonal a-axis.

Original languageEnglish
Pages (from-to)129-140
Number of pages12
JournalJournal of the European Ceramic Society
Volume31
Issue number1-2
DOIs
Publication statusPublished - Jan 1 2011
Externally publishedYes

Keywords

  • Failure analysis
  • Mechanical properties
  • PZT
  • Piezoelectric properties
  • X-ray methods

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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