Investigation of electromechanical properties of 0.68 Pb(Mg 1/3Nb2/3 )O3-0.32 PbTiO3 single crystals under uniaxial and hydrostatic pressures

Shashank Priya, K. Uchino, Jungh Ryu, Haosu Luo, D. Viehland

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

This paper reports the uniaxial and hydrostatic pressure dependence of the electromechanical property of the 0.68 Pb(Mg 1/3 Nb 2/3 )O 3 -0.32PbTiO 3 (PMNT), single crystals. A significant decrease was observed in the mechanical quality factor ( Q m ) under both uniaxial and hydrostatic pressures. This decrease was most dramatic under uniaxial conditions. The decrement in the magnitude of the Q m with pressure can be attributed to the stress induced transformation into ferroelectric tetragonal state whose c -axis is oriented at 90 from the direction of the applied stress and increased polar fluctuations within the poled piezoelectric state. The low value of Q m under uniaxial conditions may present a significant thermal stability problem under moderate drive levels.

Original languageEnglish (US)
Pages (from-to)299-307
Number of pages9
JournalFerroelectrics
Volume274
DOIs
StatePublished - Jan 1 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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