Switching the curl of polarization vectors by an irrotational electric field

Xue, Fei; Li, Linze; Britson, Jason; Hong, Zijian; Heikes, Colin; Adamo, Carolina; Schlom, D. G.; Pan, Xiaoqing; Chen, Lei

doi:10.1103/physrevb.94.100103

Cited by 21 publications

(15 citation statements)

References 40 publications

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“…where R A , R B , and R O are the ionic radii of the A and B cations and O anion, respectively] [27][28][29]. Therefore, we expect similar AFE to FE phase transition dynamics in the two systems.…”

Section: B E D Assisted Afe To Fe Phase Transitionmentioning

confidence: 83%

“…where α ij , α ijkl , α ijklmn , β ij , β ijkl , β ijklmn , and t ijkl are the coefficients for the Landau free energy function, g ijkl and κ ijkl are the coefficients for the gradient energy terms, x i is the spatial coordinate, E i is the electric field, ε 0 is the permittivity of free space, and κ b is the background permittivity [27]. With coupling term coefficients t ijkl sufficiently positive, P i and q i are competitive with each other.…”

Section: B E D Assisted Afe To Fe Phase Transitionmentioning

confidence: 99%

“…With coupling term coefficients t ijkl sufficiently positive, P i and q i are competitive with each other. Since there is no report for the Landau energy coefficients for PNZST, we use the Landau coefficients of the FE and AFE phases for the Sm-doped BiFeO 3 system [27]. Note that the Smdoped BiFeO 3 system shows similar relative stabilities of the FE and AFE phases as the PNZST system due to the similar change of the tolerance factor [the tolerance factor is given by…”

Section: B E D Assisted Afe To Fe Phase Transitionmentioning

confidence: 99%

“…Thus, the elastic energy term is neglected in Eq. (1) compared to a typical ferroelectric phase-field model [27]. It is assumed that the gradient energy coefficient tensor g ijkl and κ ijkl are isotropic.…”

Section: B E D Assisted Afe To Fe Phase Transitionmentioning

confidence: 99%

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Interaction Dynamics Between Ferroelectric and Antiferroelectric Domains in a PbZrO3 -Based Ceramic

et al. 2019

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The antiferroelectric-ferroelectric phase transition in PbZrO3-based oxides is of both fundamental and practical importance. In ceramics in which such a transition readily occurs, the antiferroelectric and the ferroelectric phases often coexist in individual grains with a coherent interphase interface. In this work, the electric biasing in situ transmission electron microscopy technique is employed to directly observe a unique microstructural dynamic when ferroelectric and antiferroelectric domains are driven by a moderate electric field to interact. It is found that, under monotonic loading, the ferroelectric domain grows until it is blocked by the ferroelectric-antiferroelectric interface. At the same time, a kink is formed on the interface at the contact point. The interaction of the growing domain with the interface is interpreted in terms of depolarization field-assisted phase transition, which is supported by our phase-field simulation. Upon further bipolar cycling, the ferroelectric domain becomes less mobile and no longer reaches the ferroelectricantiferroelectric interface, indicative of electric fatigue of the ferroelectric phase. Disciplines Ceramic Materials | Engineering Physics | Materials Science and Engineering Comments This article is published as Fan, Zhongming, Fei Xue, Goknur Tutuncu, Long-Qing Chen, and Xiaoli Tan. "Interaction Dynamics Between Ferroelectric and Antiferroelectric Domains in a PbZrO3-Based Ceramic."

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Section: B E D Assisted Afe To Fe Phase Transitionmentioning

confidence: 83%

Section: B E D Assisted Afe To Fe Phase Transitionmentioning

confidence: 99%

Section: B E D Assisted Afe To Fe Phase Transitionmentioning

confidence: 99%

Section: B E D Assisted Afe To Fe Phase Transitionmentioning

confidence: 99%

See 2 more Smart Citations

Interaction Dynamics Between Ferroelectric and Antiferroelectric Domains in a PbZrO3 -Based Ceramic

et al. 2019

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“…The remaining fundamental degree of freedom that has been relatively rarely explored concerns the lattice in crystalline solids. Despite the identification of electric vortex structures 9 – 21 , electric switching of competing vortex textures with deterministic configurability of the topological number remains experimentally unconfirmed. Therefore, the study of configurable topological defects in electrically polarised media such as a ferroelectric presents an opportunity for a complete understanding of the universal topological features in matter.…”

Section: Introductionmentioning

confidence: 99%

Configurable topological textures in strain graded ferroelectric nanoplates

et al. 2018

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Topological defects in matter behave collectively to form highly non-trivial structures called topological textures that are characterised by conserved quantities such as the winding number. Here we show that an epitaxial ferroelectric square nanoplate of bismuth ferrite subjected to a large strain gradient (as much as 105 m−1) associated with misfit strain relaxation enables five discrete levels for the ferroelectric topological invariant of the entire system because of its peculiar radial quadrant domain texture and its inherent domain wall chirality. The total winding number of the topological texture can be configured from − 1 to 3 by selective non-local electric switching of the quadrant domains. By using angle-resolved piezoresponse force microscopy in conjunction with local winding number analysis, we directly identify the existence of vortices and anti-vortices, observe pair creation and annihilation and manipulate the net number of vortices. Our findings offer a useful concept for multi-level topological defect memory.

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Theoretical Understanding of Polar Topological Phase Transitions in Functional Oxide Heterostructures: A Review

et al. 2022

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The exotic topological phase is attracting considerable attention in condensed matter physics and materials science over the past few decades due to intriguing physical insights. As a combination of “topology” and “ferroelectricity,” the ferroelectric (polar) topological structures are a fertile playground for emergent phenomena and functionalities with various potential applications. Herein, the review starts with the universal concept of the polar topological phase and goes on to briefly discuss the important role of computational tools such as phase‐field simulations in designing polar topological phases in oxide heterostructures. In particular, the history of the development of phase‐field simulations for ferroelectric oxide heterostructures is highlighted. Then, the current research progress of polar topological phases and their emergent phenomena in ferroelectric functional oxide heterostructures is reviewed from a theoretical perspective, including the topological polar structures, the establishment of phase diagrams, their switching kinetics and interconnections, phonon dynamics, and various macroscopic properties. Finally, this review offers a perspective on the future directions for the discovery of novel topological phases in other ferroelectric systems and device design for next‐generation electronic device applications.

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Switching the curl of polarization vectors by an irrotational electric field

Cited by 21 publications

References 40 publications

Interaction Dynamics Between Ferroelectric and Antiferroelectric Domains in a PbZrO3 -Based Ceramic

Interaction Dynamics Between Ferroelectric and Antiferroelectric Domains in a PbZrO3 -Based Ceramic

Configurable topological textures in strain graded ferroelectric nanoplates

Theoretical Understanding of Polar Topological Phase Transitions in Functional Oxide Heterostructures: A Review

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