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Ce and W co-doped CaBi2Nb2O9 with enhanced piezoelectric constant and electrical resistivity at high temperature

Journal Article


Abstract


  • Ce and W co-doped CaBi2Nb2O9 ceramics with chemical formula Ca0.96Ce0.04Bi2Nb2-xWxO9 (CCBN-W100x, x = 0���0.07) are fabricated via conventional solid state sintering method, to investigate the effect of W addition on the structure, electrical resistivity, dielectric and piezoelectric properties. A piezoelectric constant d33 of 13.4 pC/N is obtained in CCBN-W2 ceramics, >100% higher than that of pure CaBi2Nb2O9 (d33 = 5.8���6.4 pC/N). Of particular significance is that the electrical resistivity of CCBN-W2 ceramics (�� = 3.7 �� 109 �� cm at 500 ��C) is three orders of magnitude higher than pure CaBi2Nb2O9 (�� = 2.9 �� 106 �� cm at same temperature). All these properties, together with its low dielectric loss (tan�� = 0.13%) and excellent d33 thermal stability up to 800 ��C, merit the CCBN-W2 ceramics for high temperature piezoelectric sensing applications.

Publication Date


  • 2020

Citation


  • Shen, Z. Y., Qin, C., Luo, W. Q., Song, F., Wang, Z., Li, Y., & Zhang, S. (2020). Ce and W co-doped CaBi2Nb2O9 with enhanced piezoelectric constant and electrical resistivity at high temperature. Journal of Materiomics, 6(3), 459-466. doi:10.1016/j.jmat.2019.12.001

Scopus Eid


  • 2-s2.0-85081736405

Start Page


  • 459

End Page


  • 466

Volume


  • 6

Issue


  • 3

Place Of Publication


Abstract


  • Ce and W co-doped CaBi2Nb2O9 ceramics with chemical formula Ca0.96Ce0.04Bi2Nb2-xWxO9 (CCBN-W100x, x = 0���0.07) are fabricated via conventional solid state sintering method, to investigate the effect of W addition on the structure, electrical resistivity, dielectric and piezoelectric properties. A piezoelectric constant d33 of 13.4 pC/N is obtained in CCBN-W2 ceramics, >100% higher than that of pure CaBi2Nb2O9 (d33 = 5.8���6.4 pC/N). Of particular significance is that the electrical resistivity of CCBN-W2 ceramics (�� = 3.7 �� 109 �� cm at 500 ��C) is three orders of magnitude higher than pure CaBi2Nb2O9 (�� = 2.9 �� 106 �� cm at same temperature). All these properties, together with its low dielectric loss (tan�� = 0.13%) and excellent d33 thermal stability up to 800 ��C, merit the CCBN-W2 ceramics for high temperature piezoelectric sensing applications.

Publication Date


  • 2020

Citation


  • Shen, Z. Y., Qin, C., Luo, W. Q., Song, F., Wang, Z., Li, Y., & Zhang, S. (2020). Ce and W co-doped CaBi2Nb2O9 with enhanced piezoelectric constant and electrical resistivity at high temperature. Journal of Materiomics, 6(3), 459-466. doi:10.1016/j.jmat.2019.12.001

Scopus Eid


  • 2-s2.0-85081736405

Start Page


  • 459

End Page


  • 466

Volume


  • 6

Issue


  • 3

Place Of Publication