Photoinduced Conductivity: Conducting Domain Walls in Lithium Niobate Single Crystals (Adv. Funct. Mater. 18/2012)

Schröder, Mathias; Haußmann, Alexander; Thiessen, A.; Soergel, E.; Woike, Theo; Eng, Lukas M.

doi:10.1002/adfm.201290110

Cited by 2 publications

(1 citation statement)

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“…Nevertheless, the bound charge at wCDWs can still induce specific DW properties. For instance, elevated conduction of the wall was documented in 12 21 .…”

Section: Resultsmentioning

confidence: 99%

Formation of charged ferroelectric domain walls with controlled periodicity

Bednyakov

Sluka

Tagantsev

et al. 2015

Sci Rep

123

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Charged domain walls in proper ferroelectrics were shown recently to possess metallic-like conductivity. Unlike conventional heterointerfaces, these walls can be displaced inside a dielectric by an electric field, which is of interest for future electronic circuitry. In addition, theory predicts that charged domain walls may influence the electromechanical response of ferroelectrics, with strong enhancement upon increased charged domain wall density. The existence of charged domain walls in proper ferroelectrics is disfavoured by their high formation energy and methods of their preparation in predefined patterns are unknown. Here we develop the theoretical background for the formation of charged domain walls in proper ferroelectrics using energy considerations and outline favourable conditions for their engineering. We experimentally demonstrate, in BaTiO3 single crystals the controlled build-up of high density charged domain wall patterns, down to a spacing of 7 μm with a predominant mixed electronic and ionic screening scenario, hinting to a possible exploitation of charged domain walls in agile electronics and sensing devices.

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“…Nevertheless, the bound charge at wCDWs can still induce specific DW properties. For instance, elevated conduction of the wall was documented in 12 21 .…”

Section: Resultsmentioning

confidence: 99%