Strain effects on domain structures in ferroelectric thin films from phase-field simulations

Fang Yin Lin, Xiaoxing Cheng, Long-qing Chen, Susan B. Sinnott

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Strain and applied external electric fields are known to influence domain evolution and associated ferroelectric responses in ferroelectric thin films. Here, phase-field simulations are used to predict equilibrium domain structures and polarization-field (P-E) hysteresis loops of lead zirconate titanate (PZT) thin films under a series of mismatch strains, ranging from strongly tensile to strongly compressive. In particular, the evolution of domains and the P-E curves under different applied strains reveal the mesoscale mechanism, the appearance of in-plane polarization during domain switching, that is responsible for a relatively small coercive field and remnant polarization. A Landau energy distribution is analyzed to better understand the domain evolution under various strain conditions. The results provide guidance for choice of mismatched strains to yield the desired P-E hysteresis loops and the domain structures.

Original languageEnglish (US)
Pages (from-to)4783-4790
Number of pages8
JournalJournal of the American Ceramic Society
Volume101
Issue number10
DOIs
StatePublished - Oct 1 2018

Fingerprint

domain structure
Ferroelectric thin films
polarization
Polarization
simulation
Hysteresis loops
hysteresis
titanate
Ferroelectric materials
electric field
Electric fields
effect
Thin films
energy

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

Cite this

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title = "Strain effects on domain structures in ferroelectric thin films from phase-field simulations",
abstract = "Strain and applied external electric fields are known to influence domain evolution and associated ferroelectric responses in ferroelectric thin films. Here, phase-field simulations are used to predict equilibrium domain structures and polarization-field (P-E) hysteresis loops of lead zirconate titanate (PZT) thin films under a series of mismatch strains, ranging from strongly tensile to strongly compressive. In particular, the evolution of domains and the P-E curves under different applied strains reveal the mesoscale mechanism, the appearance of in-plane polarization during domain switching, that is responsible for a relatively small coercive field and remnant polarization. A Landau energy distribution is analyzed to better understand the domain evolution under various strain conditions. The results provide guidance for choice of mismatched strains to yield the desired P-E hysteresis loops and the domain structures.",
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Strain effects on domain structures in ferroelectric thin films from phase-field simulations. / Lin, Fang Yin; Cheng, Xiaoxing; Chen, Long-qing; Sinnott, Susan B.

In: Journal of the American Ceramic Society, Vol. 101, No. 10, 01.10.2018, p. 4783-4790.

Research output: Contribution to journalArticle

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AU - Lin, Fang Yin

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AU - Sinnott, Susan B.

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