DOI: 10.1063/1.1470247. Coercive fields in ferroelectrics: A case study in lithium niobate and lithium tantalate

Coercive fields in ferroelectrics: A case study in lithium niobate and lithium tantalate

10.1063/1.1470247

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

The experimentally measured coercive electric fields for domain reversal in ferroelectrics are typically many orders of magnitude lower than the estimates from phenomenological free-energy theory. This letter specifically investigates the influence of polarization gradients at pre-existing 180° domain walls in ferroelectrics on coercive fields for domain wall motion. It is shown that the ratio of theoretical coercive field without and with a preexisting domain wall is directly proportional to the ratio xo/a, where a is the lattice parameter and 2xo is the polarization wall width. This factor is 7.5–45 for a 20–120 nm wall width, the latter width determined here as the experimental upper limit for polarization wall width in lithium tantalate.

Bibliography

Kim, S., Gopalan, V., & Gruverman, A. (2002). Coercive fields in ferroelectrics: A case study in lithium niobate and lithium tantalate. Applied Physics Letters, 80(15), 2740â2742.

Authors 3

Sungwon Kim (first)
Venkatraman Gopalan (additional)
Alexei Gruverman (additional)

References 21 Referenced 122

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{'key': '2024020322022654600_r3b', 'first-page': '019702', 'volume': '87', 'year': '2000', 'journal-title': 'Phys. Rev. Lett.'} / Phys. Rev. Lett. (2000)
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Dates

Type	When
Created	23 years ago (July 26, 2002, 10:18 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 5:02 p.m.)
Indexed	3 months, 3 weeks ago (April 30, 2025, 4:05 a.m.)
Issued	23 years, 4 months ago (April 15, 2002)
Published	23 years, 4 months ago (April 15, 2002)
Published Print	23 years, 4 months ago (April 15, 2002)

Funders 0

None

BibTeX

@article{Kim_2002, title={Coercive fields in ferroelectrics: A case study in lithium niobate and lithium tantalate}, volume={80}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1470247}, DOI={10.1063/1.1470247}, number={15}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Kim, Sungwon and Gopalan, Venkatraman and Gruverman, Alexei}, year={2002}, month=apr, pages={2740–2742} }

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