2020
DOI: 10.1088/1361-648x/ab68f3
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Optical studies of ferroelectric and ferroelastic domain walls

Abstract: Recent studies carried out with atomic force microscopy or high-resolution transmission electron microscopy reveal that ferroic domain walls can exhibit different physical properties than the bulk of the domains, such as enhanced conductivity in insulators, or polar properties in non-polar materials. In this review we show that optical techniques, in spite of the diffraction limit, also provide key insights into the structure and physical properties of ferroelectric and ferroelastic domain walls. We give an ov… Show more

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Cited by 23 publications
(24 citation statements)
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“…So far, however, most application oriented studies focus on controlling the domain wall behaviour via electric fields and defect densities; other intriguing phenomena like the interaction of light with domain walls is still a rather overlooked topic that has only been studied in LiNbO3 128 and BiFeO3 17,111,[150][151][152][153] . Further studies, taking advantage of near-field techniques, e.g., tip-enhanced Raman spectroscopy, which overcome the diffraction limit and give the possibility to probe domain walls with a reduced bulk contribution, are desirable 154 . Another promising field that deserves further attention concerns the local interaction of electric and magnetic degrees of freedom, leading to unusual correlation phenomena 155 and domain wall magnetotransport 107,[109][110][111] .…”
Section: Lead Zirconate Titanatementioning
confidence: 99%
“…So far, however, most application oriented studies focus on controlling the domain wall behaviour via electric fields and defect densities; other intriguing phenomena like the interaction of light with domain walls is still a rather overlooked topic that has only been studied in LiNbO3 128 and BiFeO3 17,111,[150][151][152][153] . Further studies, taking advantage of near-field techniques, e.g., tip-enhanced Raman spectroscopy, which overcome the diffraction limit and give the possibility to probe domain walls with a reduced bulk contribution, are desirable 154 . Another promising field that deserves further attention concerns the local interaction of electric and magnetic degrees of freedom, leading to unusual correlation phenomena 155 and domain wall magnetotransport 107,[109][110][111] .…”
Section: Lead Zirconate Titanatementioning
confidence: 99%
“…More recently, electric-field induced avalanches from domain walls [86] have been reported in the (non-ferroelectric) ferroelastic SrTiO 3 . Ferroelastic domains appear during the transition from the cubic to tetragonal phase at 105 K and self-organize in two types of ferroelastic twin domains: {a, c} when the projection of domain walls on the plane (001) are parallel to the [100] pc or [010] pc axes and {a 1 , a 2 } for domain walls parallel to [110] pc or [1][2][3][4][5][6][7][8][9][10] pc . The ability to move ferroelastic domain walls with an electric field, which is unusual for a non-ferroelectric material, is largely a consequence of the higher polarizability of ferroelastic domains in the plane normal to the tetragonal axis [108].…”
Section: Resultsmentioning
confidence: 99%
“…The idea that ferroelectric and ferroelastic domain walls possess their own functional physical properties has been discussed theoretically as early as the 70s [1], followed by seminal experimental works in the 90s [2,3]. More recently, progress in the spatial resolution of atomic force microscopy and high-resolution transmission electron microscopy, and developments in optical techniques [4], have led to the experimental observation at domain walls of unusual conductivity in insulators [5][6][7][8][9][10][11][12] and polar properties in non-polar materials [13][14][15][16][17][18][19][20][21][22]. These results opened the way for a new paradigm for devices, coined domain wall engineering, where domain walls rather than domains are the active elements [23][24][25][26].…”
Section: Introductionmentioning
confidence: 99%
“…LiNbO3 obtained in air where domains can be localized only because their domain walls appear as shiny stripes, as a result of local strain-induced birefringence. 31,46 In the N*/N phase Fig. 2(g)].…”
Section: Figmentioning
confidence: 99%
“…Optical methods are ideally suited for fast large-scale imaging but second-harmonic generation 30 requires complex and expensive experimental setups, and polarized light microscopy can only resolve 180° domain walls (not 180° domains). 31 This leaves domain detection by surface modifications as an alternative, but etching is destructive 32 and powder decorated crystals are difficult to handle. 11 Decoration by liquid crystals (LCs) has also been suggested.…”
mentioning
confidence: 99%