Reversible switching of in-plane polarized ferroelectric domains in BaTiO3(001) with very low energy electrons

Rault, Julien; Menteş, T. O.; Locatelli, Andrea; Barrett, Nick

doi:10.1038/srep06792

Cited by 23 publications

(21 citation statements)

References 34 publications

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“…Controlled polarisation switching has even been demonstrated with MEM. 207 Finally, very recent studies have shown that domain walls can controllably be injected at desired positions, 208 with the abilty to reproducibly and reversibly engineer multiple walls. 209 Thus, the emerging role of ferroelectric domain walls as nanoelectronic components in the past few years suggests that PFM will play a key role towards domain-wall-based nanocircuit development.…”

Section: Discussionmentioning

confidence: 99%

Applications of piezoresponse force microscopy in materials research: from inorganic ferroelectrics to biopiezoelectrics and beyond

Denning

Guyonnet

Rodriguez

2016

International Materials Reviews

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Piezoresponse force microscopy (PFM) probes the mechanical deformation of a sample in response to an electric field applied with the tip of an atomic force microscope. Originally developed more than two decades ago to study ferroelectric materials, this technique has since been used to probe electromechanical functionality in a wide range of piezoelectric materials including organic and biological systems. PFM has also been demonstrated as a useful tool to detect mechanical strain originating from electrical phenomena in nonpiezoelectric materials. Paralleling advances in analytical and numerical modelling, many technical improvements have been made in the last decade: switching spectroscopy PFM allows the polarisation switching properties of ferroelectrics to be resolved in real space with nanometric resolution, while dual ac resonance tracking and band excitation PFM have been used to improve the signal-to-noise ratio. In turn, these advances have led to increasingly large multidimensional data sets containing more complete information on the properties of the sample studied. In this review, PFM operation and calibration are described, and recent advances in the characterisation of electromechanical coupling using PFM are presented. The breadth of the systems covered highlights the versatility and wide applicability of PFM in fields as diverse as materials engineering and nanomedicine. In each of these fields, combining PFM with complementary techniques is key to develop future insight into the intrinsic properties of the materials as well as for device applications.

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Section: Discussionmentioning

confidence: 99%

Applications of piezoresponse force microscopy in materials research: from inorganic ferroelectrics to biopiezoelectrics and beyond

Denning

Guyonnet

Rodriguez

2016

International Materials Reviews

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“…For both electrical and mechanical switching, ferroelastic switching seems to occur most readily at the highly active tips of ferroelastic needle domains. Such switching of ferroelastic domains in ferroelectric BaTiO 3 was observed in low energy electron microscope (LEEM) experiments [29]. Electric switching of 90 degree domains in BaTiO 3 follows the same patterns as purely ferroelastic switching [30].…”

Section: Introductionmentioning

confidence: 63%

Electrically driven ferroelastic domain walls, domain wall interactions, and moving needle domains

Ding

et al. 2019

Phys. Rev. Materials

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Ferroelastic domains generate polarity near domain walls via the flexoelectric effect. Applied electric fields change the wall dipoles and generate additional dipoles in the bulk. Molecular dynamics simulations show that the thickness of domain walls changes when an electric field is applied to the sample. Fields parallel to the walls lead to expansion of the wall thickness while fields perpendicular to the wall lead to shrinking of the wall thickness. The interactions between polar domain walls expand over more than 45 unit cells, the resulting forces change the wall-wall distances if pinning effects are small. The interaction increases nonlinearly with decreasing wall-wall distances favoring equal wall distances as the consequence of energy minimization under the constraints of a constant number of domain walls. Even for small groups of three walls the sequence of walls is locally periodic: assemblies of three parallel domain walls arrange themselves so that the intermediate domain wall is located exactly in the middle between the two outer walls. The driving force is appreciable if the distance between the outer domain walls is below approximately 30 lattice units. Pairs of domain walls often form needle domains where the shaft of the needle is ca. 3 lattice units wide. The movement of needle domains under applied electric field was simulated. The advancement and retraction of needles is larger in finite samples with charge-free surfaces than under periodic boundary conditions in the bulk. The needle tip moves even more freely when the sample surface is charged.

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“…Thus, superconductor materials represent an opportunity worthy of consideration for the implementation of tunable photonic crystals with remarkable applications as optical filters, reflectors, switches and sensing devices, and tunable resonators 31 – 36 , among others. On the other hand, ferroelectric thin films feature significant technological aspects such as short response time 37 , remanent polarization 38 , faster tuning compared to ferromagnetic materials 39 , smaller and lighter structures 40 , high power capacity 41 , and Pockels modulation 42 , which make of BTO a suitable material for developing high-performance electro-optical modulators 43 , 44 , photodetectors 45 , and novel devices such as, non-volatile optical memories 46 , 47 . In particular, the latter could serve in a wide range of applications, such as a high-speed optical buffer memory by means of the high broadband of optical fibers, with a significant reduction of power consumption for data processing.…”

Section: Introductionmentioning

confidence: 99%

Experimental realisation of tunable ferroelectric/superconductor $$({\text {B}} {\text {T}} {\text {O}}/{\text {Y}} {\text {B}}{\text {C}} {\text {O}})_{{\text {N}}}/{\text {S}}{\text {T}}{\text {O}}$$ 1D photonic crystals in the whole visible spectrum

González

Ordoñez

Melo-Luna

et al. 2020

Sci Rep

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Emergent technologies that make use of novel materials and quantum properties of light states are at the forefront in the race for the physical implementation, encoding and transmission of information. Photonic crystals (PCs) enter this paradigm with optical materials that allow the control of light propagation and can be used for optical communication, and photonics and electronics integration, making use of materials ranging from semiconductors, to metals, metamaterials, and topological insulators, to mention but a few. Here, we show how designer superconductor materials integrated into PCs fabrication allow for an extraordinary reduction of electromagnetic waves damping, making possible their optimal propagation and tuning through the structure, below critical superconductor temperature. We experimentally demonstrate, for the first time, a successful integration of ferroelectric and superconductor materials into a one-dimensional (1D) PC composed of (BTO/YBCO) N /STO bilayers that work in the whole visible spectrum, and below (and above) critical superconductor temperature T C = 80 K. Theoretical calculations support, for different number of bilayers N, the effectiveness of the produced 1D PCs and may pave the way for novel optoelectronics integration and information processing in the visible spectrum, while preserving their electric and optical properties. The use of electromagnetic (EM) waves as information carriers for communication systems has been in place for many years 1,2 ; as such, EM wavelengths make possible the transmission over large distances but, at the same time, they limit the amount of information they can convey by their frequency: the larger the carrier frequency, the larger the available transmission bandwidth and thus the information-carrying capacity of the communication system 3. For this reason, quantum artificial nanostructured materials such as photonic crystals that are able to transmit at high frequencies and that concentrate the available power within the transmitted electromagnetic wave, thus giving an improved system performance, are desired 4. PCs are artificial periodic structures characterised by a periodic variation of the refractive index with a consequent periodic spatial variation of the dielectric constant, which may be tailored to control light properties 4. They, therefore, allow the appearance of defined frequency ranges and address the issue of forbidden/allowed propagation of electromagnetic waves. As a consequence, the control and tunability of PCs opens a new perspective for information processing and technological

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Reversible switching of in-plane polarized ferroelectric domains in BaTiO3(001) with very low energy electrons

Cited by 23 publications

References 34 publications

Applications of piezoresponse force microscopy in materials research: from inorganic ferroelectrics to biopiezoelectrics and beyond

Applications of piezoresponse force microscopy in materials research: from inorganic ferroelectrics to biopiezoelectrics and beyond

Electrically driven ferroelastic domain walls, domain wall interactions, and moving needle domains

Experimental realisation of tunable ferroelectric/superconductor $$({\text {B}} {\text {T}} {\text {O}}/{\text {Y}} {\text {B}}{\text {C}} {\text {O}})_{{\text {N}}}/{\text {S}}{\text {T}}{\text {O}}$$ 1D photonic crystals in the whole visible spectrum

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