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Thickness scaling of ferroelastic domains in PbTiO3 films on DyScO3

AuthorsNesterov, O.; Matzen, Sylvia; Magén, César; Vlooswijk, A. H. G.; Catalán, Gustau ; Noheda, Beatriz
Issue Date2013
PublisherAmerican Institute of Physics
CitationApplied Physics Letters 103(14): 142901 (2013)
AbstractWe report on the thickness dependence of the ferroelastic domains of PbTiO3 films grown on (110)-DyScO3 with low thicknesses (up to 240 nm), which fall outside the validity range of the square root law proposed by Roytburd. For slow-grown films, the data reveal the linear thickness dependence predicted by Pertsev and Zembilgotov, using a complete elastic description, while a 2/3 scaling exponent is found for fast-grown films. Extremely long domains running all through the samples have been observed in the latter case, compared to the short domains observed in slow-grown films. These differences are ascribed to the in-plane anisotropy for domain wall nucleation, which is likely caused by the anisotropic elastic modulus of the substrate. © 2013 AIP Publishing LLC.
Publisher version (URL)http://dx.doi.org/10.1063/1.4823536
Identifiersdoi: 10.1063/1.4823536
issn: 0003-6951
e-issn: 1077-3118
Appears in Collections:(CIN2) Artículos
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