Avalanches in ferroelectric, ferroelastic and coelastic materials: phase transition, domain switching and propagation

Nataf, Guillaume F.; Salje, Ekhard K. H.

doi:10.1080/00150193.2020.1791662

Cited by 18 publications

(14 citation statements)

References 135 publications

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“…6 It should be noted that the elliptical shape approximation does not reflect the fractal nature of domain walls, which is an important characteristic of ferroelectrics. [30][31][32][33] The domain movement is non-smooth due to the pinning-depinning transitions (i.e., sudden jumps called jerks) of domain walls, leading to fractal domain patterns. [30][31][32][33] Note that, in this study, we focused on the acquisition of average domain wall velocity from multiple domains using a simple approximation.…”

Section: Please Cite This Article As Doi: 101063/50035753mentioning

confidence: 99%

Nonlinear domain wall velocity in ferroelectric Si-doped HfO2 thin film capacitors

Lim

Park

Kim

et al. 2021

Applied Physics Letters

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We investigate the nonlinear response of the domain wall velocity (v) to an external electric field (Eext) in ferroelectric Si-doped HfO2 thin film capacitors using piezoresponse force microscopy (PFM) and switching current measurements. We verified the reliability of the PFM images of ferroelectric domain switching by comparing the switched volume fraction in the PFM images with the time-dependent normalized switched polarization from the switching current data. Using consecutive time-dependent PFM images, we measured the velocity of the pure lateral domain wall motion at various Eext. The Eext-dependent v values closely follow the nonlinear dynamic response of elastic objects in a disordered medium. The thermally activated creep and flow regimes were observed based on the magnitude of Eext. With a dynamic exponent of μ = 1, our thin film was found to have random-field defects, which is consistent with the Lorentzian distribution of characteristic switching time that was indicated in the switching current data.

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Section: Please Cite This Article As Doi: 101063/50035753mentioning

confidence: 99%

Nonlinear domain wall velocity in ferroelectric Si-doped HfO2 thin film capacitors

Lim

Park

Kim

et al. 2021

Applied Physics Letters

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“…The domain walls are extended objects that can promote long-range impact based on local interactions. On the other hand, the substrate's topology determines multiple walls and constraints their motion, potentially leading to the phenomenon of "domain-wall jamming", for example, seen in ferroelectrics [72]. Our study has shown how the network substrates with the hierarchical architecture of simplicial complexes enable the competing interactions of different orders, potentially significant driving force of SOC [12] in these complex geometries.…”

Section: Discussionmentioning

confidence: 79%

“…Physical systems exhibiting well-pronounced signatures of SOC have been investigated in the laboratory experiments with liquid foams [69], criticality at the hysteresis loop in ferromagnets and ferroelectric switching [36,70,71], crackling noise in strained and porous materials [72], and shape-memory alloys [73]. On a larger scale, SOC was demonstrated in the data of natural systems from the forest fire [74], earthquakes [75] and ocean geophysical turbulence [76] to solar flares [77] and other astrophysical phenomena [2].…”

Section: Self-organised Critical Systems and Their Network At Different Scalesmentioning

confidence: 99%

Self-Organised Critical Dynamics as a Key to Fundamental Features of Complexity in Physical, Biological, and Social Networks

Tadić

Melnik

2021

Dynamics

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Studies of many complex systems have revealed new collective behaviours that emerge through the mechanisms of self-organised critical fluctuations. Subject to the external and endogenous driving forces, these collective states with long-range spatial and temporal correlations often arise from the intrinsic dynamics with the threshold nonlinearity and geometry-conditioned interactions. The self-similarity of critical fluctuations enables us to describe the system using fewer parameters and universal functions that, on the other hand, can simplify the computational and information complexity. Currently, the cutting-edge research on self-organised critical systems across the scales strives to formulate a unifying mathematical framework, utilise the critical universal properties in information theory, and decipher the role of hidden geometry. As a prominent example, we study the field-driven spin dynamics on the hysteresis loop in a network with higher-order structures described by simplicial complexes, which provides a geometric-frustration environment. While providing motivational illustrations from physical, biological, and social systems, along with their networks, we also demonstrate how the self-organised criticality occurs at the interplay of the complex topology and driving mode. This study opens up new promising routes with powerful tools to address a long-standing challenge in the theory and applications of complexity science ingrained in the efficient analysis of self-organised critical states under the competing higher-order interactions embedded in complex geometries.

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“…Under stress, the domain walls do no longer move smoothly, but form avalanches. This phenomenon is rather common when walls de-pin and nucleate new walls, see the reviews in [16,[42][43][44][45][46]. The energy distributions of these avalanches follow power laws with energy exponents ε between 1.33 and 2.7.…”

Section: Twin Walls As Storages For Cations and Their Pinning Behaviour In Anorthoclasementioning

confidence: 96%

“…The aim was to understand how to generate twinned materials with desirable twin wall effects. A recent review by Nataf et al [16,17] summarizes many aspects of successes and failures in 'domain wall engineering' from a physics perspective. From a mineralogical perspective, many of these effects were initially discovered in minerals with naturally occurring twin walls.…”

Section: Introductionmentioning

confidence: 99%

Ferroelastic Twinning in Minerals: A Source of Trace Elements, Conductivity, and Unexpected Piezoelectricity

Salje

2021

Minerals

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Ferroelastic twinning in minerals is a very common phenomenon. The twin laws follow simple symmetry rules and they are observed in minerals, like feldspar, palmierite, leucite, perovskite, and so forth. The major discovery over the last two decades was that the thin areas between the twins yield characteristic physical and chemical properties, but not the twins themselves. Research greatly focusses on these twin walls (or ‘twin boundaries’); therefore, because they possess different crystal structures and generate a large variety of ‘emerging’ properties. Research on wall properties has largely overshadowed research on twin domains. Some wall properties are discussed in this short review, such as their ability for chemical storage, and their structural deformations that generate polarity and piezoelectricity inside the walls, while none of these effects exist in the adjacent domains. Walls contain topological defects, like kinks, and they are strong enough to deform surface regions. These effects have triggered major research initiatives that go well beyond the realm of mineralogy and crystallography. Future work is expected to discover other twin configurations, such as co-elastic twins in quartz and growth twins in other minerals.

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Avalanches in ferroelectric, ferroelastic and coelastic materials: phase transition, domain switching and propagation

Cited by 18 publications

References 135 publications

Nonlinear domain wall velocity in ferroelectric Si-doped HfO2 thin film capacitors

Nonlinear domain wall velocity in ferroelectric Si-doped HfO2 thin film capacitors

Self-Organised Critical Dynamics as a Key to Fundamental Features of Complexity in Physical, Biological, and Social Networks

Ferroelastic Twinning in Minerals: A Source of Trace Elements, Conductivity, and Unexpected Piezoelectricity

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