Multiscaling analysis of ferroelectric domain wall roughness.

  title={Multiscaling analysis of ferroelectric domain wall roughness.},
  author={Jill Guyonnet and Elisabeth Agoritsas and Sebastian Bustingorry and Thierry Giamarchi and Patrycja Paruch},
  journal={Physical review letters},
  volume={109 14},
Using multiscaling analysis, we compare the characteristic roughening of ferroelectric domain walls in Pb(Zr0.2Ti0.8)O3 thin films with numerical simulations of weakly pinned one-dimensional interfaces. Although at length scales up to L(MA)≥5  μm the ferroelectric domain walls behave similarly to the numerical interfaces, showing a simple monoaffine scaling (with a well-defined roughness exponent ζ), we demonstrate more complex scaling at higher length scales, making the walls globally… 
Domain wall roughness in stripe phase BiFeO3 thin films.
Using the model system of ferroelectric domain walls, the effects of long-range dipolar interactions and periodic ordering on the behavior of pinned elastic interfaces are explored and it is suggested that a random field-dominated pinning, combined with stronger disorder and strain effects due to the step-bunching morphology of the samples, could be the dominant source of pinning in the system.
Domain wall roughness and creep in nanoscale crystalline ferroelectric polymers
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Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN-PT) ferroelectric thin films have been widely used in many areas due to the outstanding piezoelectric and electromechanical properties. Although many studies have been
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(K,Na)NbO3 (KNN) based lead-free materials have gained great progress and drawn much attention recently, due to their attractive piezoelectric performance and the demand for environmental protection.


Domain wall roughness in epitaxial ferroelectric PbZr0.2Ti0.8O3 thin films.
The static configuration of ferroelectric domain walls was investigated using atomic force microscopy on epitaxial PbZr( 0.2)Ti(0.8)O(3) thin films to give an effective domain wall dimensionality of d = 2.5, in good agreement with theoretical calculations for a two-dimensional elastic interface in the presence of random-bond disorder and long-range dipolar interactions.
Quasi-one-dimensional domain walls in ferroelectric ceramics: Evidence from domain dynamics and wall roughness measurements
Direct measurements of the motion of domain walls in disordered ferroelectrics provide important information on their interaction with defects, which is crucial for the functioning of various
Ferroelectric domain wall pinning at a bicrystal grain boundary in bismuth ferrite
The ferroelectric polarization switching behavior at the 24° (100) tilt grain boundary (GB) in an epitaxial multiferroic BiFeO3 bicrystal film is studied using piezoresponse force microscopy (PFM).
Thermal quench effects on ferroelectric domain walls
Using piezoresponse force microscopy on epitaxial ferroelectric thin films, we have measured the evolution of domain wall roughening as a result of heat-quench cycles up to 735
Fractal dimension and size scaling of domains in thin films of multiferroic BiFeO3.
A general model is proposed for ferroelectrics, ferroelastics or ferromagnetic domains which relates the fractal dimension of the walls to domain size scaling.
Fracture surfaces as multiscaling graphs.
It is shown that 2D fracture does not belong to any of the known kinetic roughening models, and the presence of multiscaling offers a stringent test for any theoretical model; it is demonstrated that a recently introduced model of quasistatic fracture passes this test.
Statistics of fracture surfaces.
  • S. Santucci, K. Måløy, +6 authors P. Ray
  • Mathematics, Medicine
    Physical review. E, Statistical, nonlinear, and soft matter physics
  • 2007
The statistical distribution function for the height fluctuations of brittle fracture surfaces is analyzed using extensive experimental data sampled on widely different materials and geometries and discusses for the latter, the relevance of a multiaffine analysis and the influences of the discreteness resulting from material microstructures or experimental sampling.
The statistical mechanics of interfaces subject to quenched impurities is studied in two dimensions. The presence of randomness changes the scaling of domain wall fluctuations, and modifies critical
Domain wall conductivity in La-doped BiFeO3.
Nanoscale current measurements are investigated as a function of bias and temperature and are shown to be consistent with distinct electronic properties at the domain walls leading to changes in the observed local conductivity.
Domain wall nanoelectronics
Domains in ferroelectrics were considered to be well understood by the middle of the last century: They were generally rectilinear, and their walls were Ising-like. Their simplicity stood in stark