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Dielectric and electromechanical properties of rare earth calcium oxyborate piezoelectric crystals at high temperatures

Journal Article


Abstract


  • The electrical resistivity, dielectric, and electromechanical properties of ReCa4O(BO3)3 (ReCOB; Re = Er, Y, Gd, Sm, Nd, Pr, and La) piezoelectric crystals were investigated as a function of temperature up to 1000°C. Of the studied crystals, ErCOB and YCOB were found to possess extremely high resistivity (ρ): ρ > 3 × 10 7 Ω·cm at 1000°C. The property variation in ReCOB crystals is discussed with respect to their disordered structure. The highest electromechanical coupling factor k26 and piezoelectric coefficient d26 at 1000°C, were achieved in PrCOB crystals, with values being on the order of 24.7% and 13.1 pC/N, respectively. The high thermal stability of the electromechanical properties, with variation less than 25%, together with the low dielectric loss (<46%) and high mechanical quality factor (>1500) at elevated temperatures of 1000°C, make ErCOB, YCOB, and GdCOB crystals promising for ultrahigh temperature electromechanical applications. © 2006 IEEE.

UOW Authors


  •   Yu, Fapeng (external author)
  •   Zhang, Shujun
  •   Zhao, Xian (external author)
  •   Yuan, Duorong (external author)
  •   Qin, Lifeng (external author)
  •   Wang, Qing Ming. (external author)
  •   Shrout, Thomas R. (external author)

Publication Date


  • 2011

Citation


  • Yu, F., Zhang, S., Zhao, X., Yuan, D., Qin, L., Wang, Q. & Shrout, T. R. (2011). Dielectric and electromechanical properties of rare earth calcium oxyborate piezoelectric crystals at high temperatures. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 58 (4), 868-873.

Scopus Eid


  • 2-s2.0-79955396169

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2085

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 868

End Page


  • 873

Volume


  • 58

Issue


  • 4

Place Of Publication


  • United States

Abstract


  • The electrical resistivity, dielectric, and electromechanical properties of ReCa4O(BO3)3 (ReCOB; Re = Er, Y, Gd, Sm, Nd, Pr, and La) piezoelectric crystals were investigated as a function of temperature up to 1000°C. Of the studied crystals, ErCOB and YCOB were found to possess extremely high resistivity (ρ): ρ > 3 × 10 7 Ω·cm at 1000°C. The property variation in ReCOB crystals is discussed with respect to their disordered structure. The highest electromechanical coupling factor k26 and piezoelectric coefficient d26 at 1000°C, were achieved in PrCOB crystals, with values being on the order of 24.7% and 13.1 pC/N, respectively. The high thermal stability of the electromechanical properties, with variation less than 25%, together with the low dielectric loss (<46%) and high mechanical quality factor (>1500) at elevated temperatures of 1000°C, make ErCOB, YCOB, and GdCOB crystals promising for ultrahigh temperature electromechanical applications. © 2006 IEEE.

UOW Authors


  •   Yu, Fapeng (external author)
  •   Zhang, Shujun
  •   Zhao, Xian (external author)
  •   Yuan, Duorong (external author)
  •   Qin, Lifeng (external author)
  •   Wang, Qing Ming. (external author)
  •   Shrout, Thomas R. (external author)

Publication Date


  • 2011

Citation


  • Yu, F., Zhang, S., Zhao, X., Yuan, D., Qin, L., Wang, Q. & Shrout, T. R. (2011). Dielectric and electromechanical properties of rare earth calcium oxyborate piezoelectric crystals at high temperatures. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 58 (4), 868-873.

Scopus Eid


  • 2-s2.0-79955396169

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2085

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 868

End Page


  • 873

Volume


  • 58

Issue


  • 4

Place Of Publication


  • United States