Polarization Fatigue Mechanism of High-Power Textured Piezoelectric Ceramics

Haoyang Leng, Yongke Yan, Mark Fanton, Shashank Priya

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In conjunction with ultrahigh d33and Qm, the electrical fatigue behavior of high-power piezoelectric ceramics is highly relevant for practical applications. In this study, a comparative study of fatigue behavior between randomly oriented and ?001»textured ceramics is investigated. It is found that ?001»textured ceramics exhibit better fatigue resistance behavior in comparison with the random counterpart. The superior fatigue resistance of textured ceramics originates from its smaller domain size with high domain wall density, favorable domain wall switching, and internal stress relaxation during the electric field cycling process. Both mechanical damage and domain wall pinning mechanisms are found to play an important role in influencing the fatigue behavior of high-power textured ceramics. Detailed microstructural analysis along with electrical fatigue measurement under bipolar and unipolar modes is conducted to confirm the mechanisms controlling the degradation as a function of varying fields and temperatures. High-resolution electron microscopy results demonstrate that BaTiO3(BT) templates present within the textured ceramics do not induce mechanical damage during electric field cycling.

Original languageEnglish (US)
Pages (from-to)1047-1056
Number of pages10
JournalACS Applied Electronic Materials
Volume4
Issue number3
DOIs
StatePublished - Mar 22 2022
Externally publishedYes

Bibliographical note

Funding Information:
H.L. acknowledges financial support from the DARPA MATRIX program with award number HR00111920001. Y.Y. acknowledges support from the National Science Foundation DMR program #1936432. S.P. acknowledges financial support from the National Science Foundation Award #1828609. The authors thank Dr. Hairui Liu for her assistance with material synthesis.

Publisher Copyright:
© 2022 The authors.

Keywords

  • doping
  • fatigue
  • nanodomain
  • piezoelectric
  • texturing

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