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Defect engineering in barium titanate ferroelectric ceramic showing simultaneous enhancement of piezoelectric coefficient and mechanical quality factor

Journal of the European Ceramic Society, ISSN: 0955-2219, Vol: 44, Issue: 2, Page: 891-897
2024
  • 6
    Citations
  • 0
    Usage
  • 7
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    6
  • Captures
    7
  • Mentions
    1
    • News Mentions
      1
      • 1

Most Recent News

Findings from Xi'an Jiaotong University Broaden Understanding of Engineering (Defect Engineering In Barium Titanate Ferroelectric Ceramic Showing Simultaneous Enhancement of Piezoelectric Coefficient and Mechanical Quality Factor)

2024 FEB 01 (NewsRx) -- By a News Reporter-Staff News Editor at Engineering Daily News -- Investigators publish new report on Engineering. According to news

Article Description

For high-power on-resonant piezoelectric applications, piezoelectric materials with high piezoelectric coefficient ( d 33 ) and mechanical quality factor ( Q m ) are in high demand. However, previous work has shown that the d 33 and Q m are generally inversely proportional, implying that it is difficult to improve these properties simultaneously. Here we report the simultaneous enhancement of d 33 and Q m in (Mn, Zr) co-doped BaTiO 3 (BT- x Mn- y Zr) ceramics. Compared with pure BaTiO 3 ceramics, the piezoelectric coefficient ( d 33 ) of BT-0.5%Mn-5%Zr ceramic is increased from 190 pC/N to 321 pC/N, and the Q m is increased from 290 to 513. Furthermore, the Q m of BT-1%Mn-5%Zr ceramic reaches 1470, and the d 33 is 248 pC/N. When both d 33 and Q m are considered, the obtained properties outperform commercial hard Pb(Zr,Ti)O 3 and other typical lead-free ferroelectric ceramics. The experimental results show that the enhanced d 33 and Q m of these ceramics originate from the synergistic effect of defect engineering-induced domain configuration effect and pinning effect. This work provides insights into the design of high-performance high-power lead-free ferroelectric materials.

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