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Structural stability and electro-elastic property of YCOB crystal annealed in harsh environment

Journal Article


Abstract


  • The YCa4O(BO3)3(YCOB) piezoelectric crystal has been actively studied for high temperature sensor applications in the last few years. In this paper, the structure stability and electro-elastic properties of the YCOB crystal annealed in a harsh environment (high temperatures of 600-1100 °C and a low atmospheric pressure of 2 × 10-5atm for 24 h) were studied. The chemical bonding energy of the annealed YCOB crystal was studied, with variations being less than 0.2 eV, showing the high stability of the electronic structure in the YCOB crystal. The energies of vacancy formation (EVF) for Y, Ca, O, and B atoms were analyzed via first principles calculation. The O atoms were found to possess the lowest EVF value, being easier to escape (annealing in critical conditions) and compensate (thermal treatment at elevated temperatures in air) when compared to other atoms, thus leading to oxygen vacancy defects and a decrease in the chemical bonding strength after the annealing process. This is deemed to be the main factor dominating the electro-elastic property changes and their recovery behaviours.

UOW Authors


  •   Tian, Shiwei (external author)
  •   Li, Lili (external author)
  •   Yu, Fapeng (external author)
  •   Li, Yanlu (external author)
  •   Chen, Feifei (external author)
  •   Duan, Xiulan (external author)
  •   Cheng, Xiufeng (external author)
  •   Wang, Zhengping (external author)
  •   Zhang, Shujun
  •   Zhao, Xian (external author)

Publication Date


  • 2018

Citation


  • Tian, S., Li, L., Yu, F., Li, Y., Chen, F., Duan, X., Cheng, X., Wang, Z., Zhang, S. & Zhao, X. (2018). Structural stability and electro-elastic property of YCOB crystal annealed in harsh environment. Applied Physics Letters, 113 (12), 122905-1-122905-4.

Scopus Eid


  • 2-s2.0-85053849641

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3273

Start Page


  • 122905-1

End Page


  • 122905-4

Volume


  • 113

Issue


  • 12

Place Of Publication


  • United States

Abstract


  • The YCa4O(BO3)3(YCOB) piezoelectric crystal has been actively studied for high temperature sensor applications in the last few years. In this paper, the structure stability and electro-elastic properties of the YCOB crystal annealed in a harsh environment (high temperatures of 600-1100 °C and a low atmospheric pressure of 2 × 10-5atm for 24 h) were studied. The chemical bonding energy of the annealed YCOB crystal was studied, with variations being less than 0.2 eV, showing the high stability of the electronic structure in the YCOB crystal. The energies of vacancy formation (EVF) for Y, Ca, O, and B atoms were analyzed via first principles calculation. The O atoms were found to possess the lowest EVF value, being easier to escape (annealing in critical conditions) and compensate (thermal treatment at elevated temperatures in air) when compared to other atoms, thus leading to oxygen vacancy defects and a decrease in the chemical bonding strength after the annealing process. This is deemed to be the main factor dominating the electro-elastic property changes and their recovery behaviours.

UOW Authors


  •   Tian, Shiwei (external author)
  •   Li, Lili (external author)
  •   Yu, Fapeng (external author)
  •   Li, Yanlu (external author)
  •   Chen, Feifei (external author)
  •   Duan, Xiulan (external author)
  •   Cheng, Xiufeng (external author)
  •   Wang, Zhengping (external author)
  •   Zhang, Shujun
  •   Zhao, Xian (external author)

Publication Date


  • 2018

Citation


  • Tian, S., Li, L., Yu, F., Li, Y., Chen, F., Duan, X., Cheng, X., Wang, Z., Zhang, S. & Zhao, X. (2018). Structural stability and electro-elastic property of YCOB crystal annealed in harsh environment. Applied Physics Letters, 113 (12), 122905-1-122905-4.

Scopus Eid


  • 2-s2.0-85053849641

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3273

Start Page


  • 122905-1

End Page


  • 122905-4

Volume


  • 113

Issue


  • 12

Place Of Publication


  • United States