Shape memory unimorph actuators using lead zirconate-based antiferroelectrics

Ki Young Oh, Atsushi Furuta, Kenji Uchino

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Abstract

Shape memory unimorph actuators have been manufactured using lead zirconate-based antiferroelectric ceramics (Pb0.99Nb0.02 [(Zr0.6Sn0.4)1-y Tiy]0.98O3). In a unimorph structure, a slightly higher Ti concentration y(0.0630) is required than that (0.0625) in a simple disk in order to stabilize the field-induced ferroelectric state. This is probably due to the compressive stress generated in the unimorph configuration. Dynamic response has also been investigated in the shape memory unimorph. Only a short period electric field pulse (< 5 ms) can drive the unimorph; this gives an advantage in control than in conventional piezoelectric actuators.

Original languageEnglish (US)
Pages (from-to)905-908
Number of pages4
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume98
Issue number8
StatePublished - Jan 1 1990

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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