Depolarization of multidomain ferroelectric materials

Dong Zhao (Corresponding author), Thomas Lenz, Gerwin H. Gelinck, Pim Groen, Dragan Damjanovic, Dago M. de Leeuw, Ilias Katsouras (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Uittreksel

Depolarization in ferroelectric materials has been studied since the 1970s, albeit quasi-statically. The dynamics are described by the empirical Merz law, which gives the polarization switching time as a function of electric field, normalized to the so-called activation field. The Merz law has been used for decades; its origin as domain-wall depinning has recently been corroborated by molecular dynamics simulations. Here we experimentally investigate domain-wall depinning by measuring the dynamics of depolarization. We find that the boundary between thermodynamically stable and depolarizing regimes can be described by a single constant, Pr0εferroEc. Among different multidomain ferroelectric materials the values of coercive field, Ec, dielectric constant, εferro, and remanent polarization, Pr, vary by orders of magnitude; the value for Pr0εferroEc however is comparable, about 15. Using this extracted universal value, we show that the depolarization field is similar to the activation field, which corresponds to the transition from creep to domain-wall flow.

TaalEngels
Artikelnummer2547
Aantal pagina's11
TijdschriftNature Communications
Volume10
Nummer van het tijdschrift1
DOI's
StatusGepubliceerd - 1 dec 2019

Vingerafdruk

ferroelectric materials
Domain walls
Depolarization
Molecular Dynamics Simulation
depolarization
Ferroelectric materials
domain wall
Chemical activation
activation
wall flow
Wall flow
Remanence
polarization
Molecular dynamics
Creep
Permittivity
Electric fields
Polarization
permittivity
molecular dynamics

Citeer dit

Zhao, D., Lenz, T., Gelinck, G. H., Groen, P., Damjanovic, D., de Leeuw, D. M., & Katsouras, I. (2019). Depolarization of multidomain ferroelectric materials. Nature Communications, 10(1), [2547]. DOI: 10.1038/s41467-019-10530-4
Zhao, Dong ; Lenz, Thomas ; Gelinck, Gerwin H. ; Groen, Pim ; Damjanovic, Dragan ; de Leeuw, Dago M. ; Katsouras, Ilias. / Depolarization of multidomain ferroelectric materials. In: Nature Communications. 2019 ; Vol. 10, Nr. 1.
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abstract = "Depolarization in ferroelectric materials has been studied since the 1970s, albeit quasi-statically. The dynamics are described by the empirical Merz law, which gives the polarization switching time as a function of electric field, normalized to the so-called activation field. The Merz law has been used for decades; its origin as domain-wall depinning has recently been corroborated by molecular dynamics simulations. Here we experimentally investigate domain-wall depinning by measuring the dynamics of depolarization. We find that the boundary between thermodynamically stable and depolarizing regimes can be described by a single constant, Pr/ε0εferroEc. Among different multidomain ferroelectric materials the values of coercive field, Ec, dielectric constant, εferro, and remanent polarization, Pr, vary by orders of magnitude; the value for Pr/ε0εferroEc however is comparable, about 15. Using this extracted universal value, we show that the depolarization field is similar to the activation field, which corresponds to the transition from creep to domain-wall flow.",
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Zhao, D, Lenz, T, Gelinck, GH, Groen, P, Damjanovic, D, de Leeuw, DM & Katsouras, I 2019, 'Depolarization of multidomain ferroelectric materials' Nature Communications, vol. 10, nr. 1, 2547. DOI: 10.1038/s41467-019-10530-4

Depolarization of multidomain ferroelectric materials. / Zhao, Dong (Corresponding author); Lenz, Thomas; Gelinck, Gerwin H.; Groen, Pim; Damjanovic, Dragan; de Leeuw, Dago M.; Katsouras, Ilias (Corresponding author).

In: Nature Communications, Vol. 10, Nr. 1, 2547, 01.12.2019.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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Zhao D, Lenz T, Gelinck GH, Groen P, Damjanovic D, de Leeuw DM et al. Depolarization of multidomain ferroelectric materials. Nature Communications. 2019 dec 1;10(1). 2547. Beschikbaar vanaf, DOI: 10.1038/s41467-019-10530-4