Surface effect on domain wall width in ferroelectrics

Eugene A. Eliseev, Anna N. Morozovska, Sergei V. Kalinin, Yulan Li, Jie Shen, Maya D. Glinchuk, Long Qing Chen, Venkatraman Gopalan

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We study the effect of the depolarization field on a domain wall structure near the surface of a ferroelectric. Since in real situation bound and screening charges form an electric double layer, the breaking of this layer by the domain wall induces stray depolarization field, which in turn changes the domain wall structure. Power law decay of the stray field results in the power law of polarization saturation near the surface, as compared to exponential saturation in the bulk. Obtained results predict that the surface broadening of ferroelectric domain walls appeared near Curie temperature as well as describe domain wall depth profile in weak ferroelectrics. We qualitatively describe extra-broad domain walls near LiNbO3 and LiTaO3 surfaces observed experimentally at room temperature, which probably originate at high temperatures but did not fully relax their width with temperature decrease allowing for lattice pinning and defect centers. Thus results have broad implication for fundamental issues such as maximal information storage density in ferroelectric data storage, domain wall pinning mechanisms at surfaces and interfaces, and nucleation dynamics.

Original languageEnglish (US)
Article number084102
JournalJournal of Applied Physics
Volume106
Issue number8
DOIs
StatePublished - Nov 10 2009

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domain wall
depolarization
saturation
data storage
Curie temperature
screening
nucleation
defects
decay
room temperature
polarization
profiles

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Eliseev, E. A., Morozovska, A. N., Kalinin, S. V., Li, Y., Shen, J., Glinchuk, M. D., ... Gopalan, V. (2009). Surface effect on domain wall width in ferroelectrics. Journal of Applied Physics, 106(8), [084102]. https://doi.org/10.1063/1.3236644
Eliseev, Eugene A. ; Morozovska, Anna N. ; Kalinin, Sergei V. ; Li, Yulan ; Shen, Jie ; Glinchuk, Maya D. ; Chen, Long Qing ; Gopalan, Venkatraman. / Surface effect on domain wall width in ferroelectrics. In: Journal of Applied Physics. 2009 ; Vol. 106, No. 8.
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Eliseev, EA, Morozovska, AN, Kalinin, SV, Li, Y, Shen, J, Glinchuk, MD, Chen, LQ & Gopalan, V 2009, 'Surface effect on domain wall width in ferroelectrics', Journal of Applied Physics, vol. 106, no. 8, 084102. https://doi.org/10.1063/1.3236644

Surface effect on domain wall width in ferroelectrics. / Eliseev, Eugene A.; Morozovska, Anna N.; Kalinin, Sergei V.; Li, Yulan; Shen, Jie; Glinchuk, Maya D.; Chen, Long Qing; Gopalan, Venkatraman.

In: Journal of Applied Physics, Vol. 106, No. 8, 084102, 10.11.2009.

Research output: Contribution to journalArticle

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AU - Kalinin, Sergei V.

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AU - Chen, Long Qing

AU - Gopalan, Venkatraman

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Eliseev EA, Morozovska AN, Kalinin SV, Li Y, Shen J, Glinchuk MD et al. Surface effect on domain wall width in ferroelectrics. Journal of Applied Physics. 2009 Nov 10;106(8). 084102. https://doi.org/10.1063/1.3236644