High power piezoelectric characteristics of BiScO3-PbTiO3-Pb(Mn1/3 Nb2/3)O3

Jungho Ryu, Shashank Priya, Chiharu Sakaki, Kenji Uchino

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Abstract

High Curie temperature and high Qm piezoelectric materials were developed in (0.9-x)BiScO3-xPbTiO3-0.1Pb(Mn1/3 Nb2/3)O3 (BS-PT-PMnN). A morphotrophic phase boundary (MPB), separating the rhombohedral and tetragonal phase was found as x ∼ 0.6, where highest piezoelectric constant (d33) and electromechanical coupling factor (kp) were obtained. The microstructures and sintering behavior showed a significant change with PT composition, which might be associated with a transient liquid phase at low firing temperature region. A high mechanical quality factor (Qm) which is important for high power applications, and high transition temperature (Tc) were obtained from the tetragonal phase (x ∼ 0.68), and the magnitude of these constants were 1000, and 420°C, respectively. The maximum vibration velocity 0.72 m/s was obtained from x=0.56 composition.

Original languageEnglish (US)
Pages (from-to)6040-6044
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number10
DOIs
StatePublished - Oct 2002

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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