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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202103680
|2 doi
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Liu, Yongtao
|e verfasserin
|4 aut
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| 245 |
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|a Disentangling Ferroelectric Wall Dynamics and Identification of Pinning Mechanisms via Deep Learning
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 26.10.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a Field-induced domain-wall dynamics in ferroelectric materials underpins multiple applications ranging from actuators to information technology devices and necessitates a quantitative description of the associated mechanisms including giant electromechanical couplings, controlled nonlinearities, or low coercive voltages. While the advances in dynamic piezoresponse force microscopy measurements over the last two decades have rendered visualization of polarization dynamics relatively straightforward, the associated insights into the local mechanisms have been elusive. This work explores the domain dynamics in model polycrystalline materials using a workflow combining deep-learning-based segmentation of the domain structures with nonlinear dimensionality reduction using multilayer rotationally invariant autoencoders (rVAE). The former allows unambiguous identification and classification of the ferroelectric and ferroelastic domain walls. The rVAE discovers the latent representations of the domain wall geometries and their dynamics, thus providing insight into the intrinsic mechanisms of polarization switching, that can further be compared to simple physical models. The rVAE disentangles the factors affecting the pinning efficiency of ferroelectric walls, offering insights into the correlation of ferroelastic wall distribution and ferroelectric wall pinning
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|a Journal Article
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|a deep learning
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| 650 |
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4 |
|a domain wall dynamics
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| 650 |
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4 |
|a ferroelectrics
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| 650 |
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4 |
|a pinning mechanism
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| 700 |
1 |
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|a Proksch, Roger
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wong, Chun Yin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ziatdinov, Maxim
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kalinin, Sergei V
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 43 vom: 30. Okt., Seite e2103680
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:33
|g year:2021
|g number:43
|g day:30
|g month:10
|g pages:e2103680
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| 856 |
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|u http://dx.doi.org/10.1002/adma.202103680
|3 Volltext
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