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Study of compressive type accelerometer based on lead-free BNKBT piezoceramics

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Abstract

Lead-free piezoelectric 0.90(Bi1/2Na1/2)TiO3-0.05(Bi1/2K1/2)TiO3-0.05BaTiO3 ceramics(abbreviated as BNKBT-5) rings were fabricated using a conventional mixed oxide method. The ceramics have a piezoelectric constant d33=168 pC/N, electromechanical coupling factors kp=0.313 and kt=0.487. The BNKBT lead-free ceramic rings were used as the transduction elements in a compressive type accelerometer and its performance compared with a lead zirconate titanate (PZT) APC 840 ceramic accelerometer with similar structure. The lead-free accelerometer shows good performance and has a broader frequency response compared to the lead-based PZT accelerometer.

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Authors and Affiliations

  1. Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, P.R. China

    S.H. Choy, X.X. Wang, H.L.W. Chan & C.L. Choy

Authors
  1. S.H. Choy
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  2. X.X. Wang
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  3. H.L.W. Chan
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  4. C.L. Choy
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Correspondence to S.H. Choy.

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PACS

77.22.Ej; 77.84.-s; 85.50.-n

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Choy, S., Wang, X., Chan, H. et al. Study of compressive type accelerometer based on lead-free BNKBT piezoceramics. Appl. Phys. A 82, 715–718 (2006). https://doi.org/10.1007/s00339-005-3421-z

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  • DOI: https://doi.org/10.1007/s00339-005-3421-z

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