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Thermal expansion and electro-elastic features of Ba2TiSi2O8 high temperature piezoelectric crystal

Journal Article


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Abstract


  • A high-quality Ba2TiSi2O8 (BTS) single crystal was grown using the Czochralski (Cz) pulling method. The thermal expansion and electro-elastic properties of BTS crystal were studied for high temperature sensor applications. The relative dielectric permittivities εT11/ε0 and εT33/ε0 were determined to be 16.3 and 11.8, while the piezoelectric coefficients d15, d31, d33 were found to be 17.8, 2.9, and 4.0 pC/N, respectively. Temperature dependence of electro-elastic properties were investigated, where the variation of elastic compliance s55E (= sE44) was found to be <6% over temperature range of 20–700◦C. Taking advantage of the anisotropic thermal expansion, linear thermal expansion comparable to insulating alumina ceramic was achieved over temperature range up to 650◦C. The optimum crystal cut with large effective piezoelectric coefficient (>8.5 pC/N) and linear thermal expansion coefficient (8.03 ppm/◦C) achieved for BTS crystal along the (47◦, ϕ) direction (ϕ is arbitrary in 0–360◦), together with its good temperature stability up to 650◦C, make BTS crystal a promising candidate for high temperature piezoelectric sensors.

UOW Authors


  •   Jiang, Chao (external author)
  •   Chen, Feifei (external author)
  •   Yu, Fapeng (external author)
  •   Tian, Shiwei (external author)
  •   Cheng, Xiufeng (external author)
  •   Zhang, Shujun
  •   Zhao, Xian (external author)

Publication Date


  • 2019

Citation


  • Jiang, C., Chen, F., Yu, F., Tian, S., Cheng, X., Zhang, S. & Zhao, X. (2019). Thermal expansion and electro-elastic features of Ba2TiSi2O8 high temperature piezoelectric crystal. Crystals, 9 (1), 1-12.

Scopus Eid


  • 2-s2.0-85059393816

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=4464&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3410

Number Of Pages


  • 11

Start Page


  • 1

End Page


  • 12

Volume


  • 9

Issue


  • 1

Place Of Publication


  • Switzerland

Abstract


  • A high-quality Ba2TiSi2O8 (BTS) single crystal was grown using the Czochralski (Cz) pulling method. The thermal expansion and electro-elastic properties of BTS crystal were studied for high temperature sensor applications. The relative dielectric permittivities εT11/ε0 and εT33/ε0 were determined to be 16.3 and 11.8, while the piezoelectric coefficients d15, d31, d33 were found to be 17.8, 2.9, and 4.0 pC/N, respectively. Temperature dependence of electro-elastic properties were investigated, where the variation of elastic compliance s55E (= sE44) was found to be <6% over temperature range of 20–700◦C. Taking advantage of the anisotropic thermal expansion, linear thermal expansion comparable to insulating alumina ceramic was achieved over temperature range up to 650◦C. The optimum crystal cut with large effective piezoelectric coefficient (>8.5 pC/N) and linear thermal expansion coefficient (8.03 ppm/◦C) achieved for BTS crystal along the (47◦, ϕ) direction (ϕ is arbitrary in 0–360◦), together with its good temperature stability up to 650◦C, make BTS crystal a promising candidate for high temperature piezoelectric sensors.

UOW Authors


  •   Jiang, Chao (external author)
  •   Chen, Feifei (external author)
  •   Yu, Fapeng (external author)
  •   Tian, Shiwei (external author)
  •   Cheng, Xiufeng (external author)
  •   Zhang, Shujun
  •   Zhao, Xian (external author)

Publication Date


  • 2019

Citation


  • Jiang, C., Chen, F., Yu, F., Tian, S., Cheng, X., Zhang, S. & Zhao, X. (2019). Thermal expansion and electro-elastic features of Ba2TiSi2O8 high temperature piezoelectric crystal. Crystals, 9 (1), 1-12.

Scopus Eid


  • 2-s2.0-85059393816

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=4464&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3410

Number Of Pages


  • 11

Start Page


  • 1

End Page


  • 12

Volume


  • 9

Issue


  • 1

Place Of Publication


  • Switzerland