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Effect of MnO2 addition on relaxor behavior and electrical properties of PMNST ferroelectric ceramics

Journal Article


Abstract


  • A novel ferroelectric system, 0.2Pb(Mg1/3Nb2/3)O3–0.8Pb(Sn0.46Ti0.54)O3 with MnO2 addition (PMNST-Mn), was prepared. The dielectric, ferroelectric and piezoelectric properties were investigated. The results demonstrated that the addition of MnO2 suppressed the dielectric relaxor behavior of PMNST. With the increase of MnO2 addition, the diffuse phase transition (DPT) behavior weakened gradually. The addition of MnO2 contributed to the decrease of the dielectric loss (tanδ) and the enhancement of ferroelectric polarization. The optimum ferroelectric and piezoelectric properties were obtained when the addition of MnO2 is 0.75 mol%, and the remnant polarization (Pr) and mechanical quality factor (Qm) were about 25% and 60% higher than those of PMNST, respectively. It was suggested that the formation of oxygen vacancies made the important contribution to suppressing relaxor behavior and improving the electrical properties of PMNST due to the substitution of Mn for B-site. This work provided a practicable strategy to tune electrical properties of ferroelectrics.

UOW Authors


  •   Li, Yong (external author)
  •   Wang, Dawei (external author)
  •   Cao, Wenqiang (external author)
  •   Li, Bin (external author)
  •   Yuan, Jie (external author)
  •   Zhang, Deqing (external author)
  •   Zhang, Shujun
  •   Cao, Maosheng (external author)

Publication Date


  • 2015

Citation


  • Li, Y., Wang, D., Cao, W., Li, B., Yuan, J., Zhang, D., Zhang, S. & Cao, M. (2015). Effect of MnO2 addition on relaxor behavior and electrical properties of PMNST ferroelectric ceramics. Ceramics International, 41 (8), 9647-9654.

Scopus Eid


  • 2-s2.0-84930928435

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2845

Number Of Pages


  • 7

Start Page


  • 9647

End Page


  • 9654

Volume


  • 41

Issue


  • 8

Place Of Publication


  • United Kingdom

Abstract


  • A novel ferroelectric system, 0.2Pb(Mg1/3Nb2/3)O3–0.8Pb(Sn0.46Ti0.54)O3 with MnO2 addition (PMNST-Mn), was prepared. The dielectric, ferroelectric and piezoelectric properties were investigated. The results demonstrated that the addition of MnO2 suppressed the dielectric relaxor behavior of PMNST. With the increase of MnO2 addition, the diffuse phase transition (DPT) behavior weakened gradually. The addition of MnO2 contributed to the decrease of the dielectric loss (tanδ) and the enhancement of ferroelectric polarization. The optimum ferroelectric and piezoelectric properties were obtained when the addition of MnO2 is 0.75 mol%, and the remnant polarization (Pr) and mechanical quality factor (Qm) were about 25% and 60% higher than those of PMNST, respectively. It was suggested that the formation of oxygen vacancies made the important contribution to suppressing relaxor behavior and improving the electrical properties of PMNST due to the substitution of Mn for B-site. This work provided a practicable strategy to tune electrical properties of ferroelectrics.

UOW Authors


  •   Li, Yong (external author)
  •   Wang, Dawei (external author)
  •   Cao, Wenqiang (external author)
  •   Li, Bin (external author)
  •   Yuan, Jie (external author)
  •   Zhang, Deqing (external author)
  •   Zhang, Shujun
  •   Cao, Maosheng (external author)

Publication Date


  • 2015

Citation


  • Li, Y., Wang, D., Cao, W., Li, B., Yuan, J., Zhang, D., Zhang, S. & Cao, M. (2015). Effect of MnO2 addition on relaxor behavior and electrical properties of PMNST ferroelectric ceramics. Ceramics International, 41 (8), 9647-9654.

Scopus Eid


  • 2-s2.0-84930928435

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2845

Number Of Pages


  • 7

Start Page


  • 9647

End Page


  • 9654

Volume


  • 41

Issue


  • 8

Place Of Publication


  • United Kingdom