Domain wall release in "hard" piezoelectric under continuous large amplitude ac excitation

Yongkang Gao, Kenji Uchino, Dwight Viehland

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Systematic investigation of large amplitude ac excitation effects on the polarization-electric-field (P-E) and strain-electric-field (ε-E) characteristics of both "hard" and "soft" Pb (Zr,Ti) O3 ceramics was performed. Upon ac excitation, a gradual disappearance of the shift on P-E response along the E axis (Eint) was observed for the hard piezoelectric; however, no such change was observed for the soft one. With increasing ac excitation cycle number, for a hard piezoelectric the internal dipolar field and mechanical quality factor Qm decrease by following an exponential time law, whereas the electromechanical and dielectric properties increase with significant deviation from the time law. It is proposed that additional domain release mechanism may exist for hard piezoelectric, besides the decrease of internal dipolar field upon continuous ac excitation.

Original languageEnglish (US)
Article number114110
JournalJournal of Applied Physics
Volume101
Issue number11
DOIs
StatePublished - Jun 22 2007

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domain wall
excitation
electric fields
polarization
dielectric properties
Q factors
ceramics
deviation
cycles
shift

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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Domain wall release in "hard" piezoelectric under continuous large amplitude ac excitation. / Gao, Yongkang; Uchino, Kenji; Viehland, Dwight.

In: Journal of Applied Physics, Vol. 101, No. 11, 114110, 22.06.2007.

Research output: Contribution to journalArticle

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