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Dielectric, elastic and piezoelectric properties of SrLaGa3O7 and BaLaGa3O7 crystals with Melilite structure

Journal Article


Abstract


  • A full matrix of electromechanical properties of Melilite SrLaGa3O7 and BaLaGa3O7 crystals was evaluated by the impedance method, with minimal variations being observed for the two crystals. The , d14 and k14 were determined to be 13.6, 9.4–9.5 pC/N and 17.1–17.4%, respectively. The relationship between electromechanical properties and microstructures was established to explain the elastic relationship, and piezoelectric origin. The optimized electromechanical properties were investigated in double rotated coordinate. The high resistivity (∼108 Ohm·cm), high thermal stability of elastic constants (with variations of <10%) and piezoelectric properties (with minimal variation of 8%) over the temperature range of 25–500 °C, making SrLaGa3O7 an attractive candidate for sensing applications at elevated temperatures.

UOW Authors


  •   Shen, Chuanying (external author)
  •   Zhang, Yuanyuan (external author)
  •   Yu, Haohai (external author)
  •   Zhang, Shujun
  •   Cao, Wenwu (external author)
  •   Wang, Jiyang (external author)
  •   Zhang, Huaijin (external author)

Publication Date


  • 2015

Citation


  • Shen, C., Zhang, Y., Yu, H., Zhang, S., Cao, W., Wang, J. & Zhang, H. (2015). Dielectric, elastic and piezoelectric properties of SrLaGa3O7 and BaLaGa3O7 crystals with Melilite structure. Journal Of Alloys And Compounds, 647 1069-1074.

Scopus Eid


  • 2-s2.0-84936818137

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2842

Number Of Pages


  • 5

Start Page


  • 1069

End Page


  • 1074

Volume


  • 647

Place Of Publication


  • Netherlands

Abstract


  • A full matrix of electromechanical properties of Melilite SrLaGa3O7 and BaLaGa3O7 crystals was evaluated by the impedance method, with minimal variations being observed for the two crystals. The , d14 and k14 were determined to be 13.6, 9.4–9.5 pC/N and 17.1–17.4%, respectively. The relationship between electromechanical properties and microstructures was established to explain the elastic relationship, and piezoelectric origin. The optimized electromechanical properties were investigated in double rotated coordinate. The high resistivity (∼108 Ohm·cm), high thermal stability of elastic constants (with variations of <10%) and piezoelectric properties (with minimal variation of 8%) over the temperature range of 25–500 °C, making SrLaGa3O7 an attractive candidate for sensing applications at elevated temperatures.

UOW Authors


  •   Shen, Chuanying (external author)
  •   Zhang, Yuanyuan (external author)
  •   Yu, Haohai (external author)
  •   Zhang, Shujun
  •   Cao, Wenwu (external author)
  •   Wang, Jiyang (external author)
  •   Zhang, Huaijin (external author)

Publication Date


  • 2015

Citation


  • Shen, C., Zhang, Y., Yu, H., Zhang, S., Cao, W., Wang, J. & Zhang, H. (2015). Dielectric, elastic and piezoelectric properties of SrLaGa3O7 and BaLaGa3O7 crystals with Melilite structure. Journal Of Alloys And Compounds, 647 1069-1074.

Scopus Eid


  • 2-s2.0-84936818137

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2842

Number Of Pages


  • 5

Start Page


  • 1069

End Page


  • 1074

Volume


  • 647

Place Of Publication


  • Netherlands