Fabrication and electrical properties of ultrasonic motor for bismuth layer-structured ferroelectric ceramics (Sr<SUB>0.7</SUB>Ca<SUB>0.3</SUB>)<SUB>2</SUB>Bi<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>18</SUB>

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Other Title
  • ビスマス層状構造強誘電体(Sr<SUB>0.7</SUB>Ca<SUB>0.3</SUB>)<SUB>2</SUB>Bi<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>18</SUB>セラミックスを用いた超音波モーターの作製と評価

Abstract

Recently, there are many reports of ultrasonic motors using lead-free piezoelectric ceramics with relatively high piezoelectric strain constant d33. However, ultrasonic motors using bismuth layer-structured ferroelectrics (BLSFs) with small d33 have not been reported yet. In this study, we attempted to demonstrate ultrasonic motors using one of the BLSF ceramics, (Sr0.7Ca0.3)2Bi4Ti5O18. As a result, rotation of the rotor is confirmed, and the rotational speed of 300 rpm at the center frequency was observed. In addition, the temperature rise under the continuous driving at room temperature was about 20%. And, the frequency variation from the center frequency was very small of about 0.02%.

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Details 詳細情報について

  • CRID
    1390001205617983488
  • NII Article ID
    130006976240
  • DOI
    10.14853/pcersj.2011f.0.304.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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