Study on the orientation degree of Pb1−xLaxTiO3 thin films by the rocking curve technique and its morphological aspects

Rangel, J. H. G.; Bernardi, M. I. B.; Paskocimas, C. A.; Longo, Elson; Varela, José Arana

doi:10.1016/j.surfcoat.2006.11.039

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…The intensity of rocking curve is plotted in logarithmic scale highlighting better the two-contributing curves feature occurring for thicker samples. This effect is to be explained by the presence of two regions having different degrees of orientation, a highly oriented one and more distorted one [ 50 , 51 , 52 ]. The effect is noticeable for the thicker films, e.g., a 132 nm LFO film.…”

Section: Resultsmentioning

confidence: 99%

Thickness-Dependent Photoelectrochemical Water Splitting Properties of Self-Assembled Nanostructured LaFeO3 Perovskite Thin Films

et al. 2021

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Tuning the intrinsic structural and stoichiometric properties by different means is used for increasing the green energy production efficiency of complex oxide materials. Here, we report on the formation of self-assembled nanodomains and their effects on the photoelectrochemical (PEC) properties of LaFeO3 (LFO) epitaxial thin films as a function of layer’s thickness. The variation with the film’s thickness of the structural parameters such as in-plane and out-of-plane crystalline coherence length and the coexistence of different epitaxial orientation—<100>SrTiO3//<001> LFO, <100>SrTiO3//<110> LFO and [110] LFO//[010] STO, as well as the appearance of self-assembled nanodomains for film’s thicknesses higher than 14 nm, is presented. LFO thin films exhibit different epitaxial orientations depending on their thickness, and the appearance of self-assembled nanopyramids-like domains after a thickness threshold value has proven to have a detrimental effect on the PEC functional properties. Using Nb:SrTiO3 as conductive substrate and 0.5 M NaOH aqueous solution for PEC measurements, the dependence of the photocurrent density and the onset potential vs. RHE on the structural and stoichiometric features exhibited by the LFO photoelectrodes are unveiled by the X-ray diffraction, high-resolution transmission electron microscopy, ellipsometry, and Rutherford backscattering spectroscopy results. The potentiodynamic PEC analysis has revealed the highest photocurrent density Jphotocurrent values (up to 1.2 mA/cm2) with excellent stability over time, for the thinnest LFO/Nb:SrTiO3 sample, both cathodic and anodic behavior being noticed. Noticeably, the LFO thin film shows unbiased hydrogen evolution from water, as determined by gas chromatography in aqueous 0.5 M NaOH solution under constant illumination.

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Section: Resultsmentioning

confidence: 99%

Thickness-Dependent Photoelectrochemical Water Splitting Properties of Self-Assembled Nanostructured LaFeO3 Perovskite Thin Films

et al. 2021

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“…Other authors have also found rocking curve deformations. Although bulk diamond is mechanically notably rigid, a thin wafer can easily bend about an axis parallel to its surface either in response to stress from the mounting fixture or because of the strain caused by defects . GaN coatings also displayed rocking curve widening, which was explained as a consequence of the incorporation of Ga adatoms into a non‐uniform GaN structure .…”

Section: Resultsmentioning

confidence: 99%

AuN films - structure and chemical binding

Quintero

Arango

Ospina

et al. 2015

Surf. Interface Anal.

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AuN films were produced on 304 stainless steel using an arc‐pulsed – assisted plasma physical vapor deposition system. The deposition was performed using an Au target in a nitrogen atmosphere at different pressures. The films were characterized using x‐ray photoelectron spectroscopy and x‐ray diffraction. A 398.1‐eV binding energy was observed and assigned to gold nitride species. The x‐ray diffraction patterns displayed a crystallographic structure that corresponded to the Au‐fcc phase with broad diffraction lines. The observed widening of the Bragg diffraction lines (rocking curves) can be attributed to the presence of interstitial nitrogen atoms in the Au‐fcc structure. Copyright © 2015 John Wiley & Sons, Ltd.

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Lanthanum-Doped Lead Titanate Ferro- and Piezoelectric Thin Films Prepared by Polymeric Precursor Method

Hasnaoui

Azaroual²

2022

Proceedings of the Sixth International Symposium on Dielectric Materials and Applications (ISyDMA’6)

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Study on the orientation degree of Pb1−xLaxTiO3 thin films by the rocking curve technique and its morphological aspects

Cited by 5 publications

References 16 publications

Thickness-Dependent Photoelectrochemical Water Splitting Properties of Self-Assembled Nanostructured LaFeO3 Perovskite Thin Films

Thickness-Dependent Photoelectrochemical Water Splitting Properties of Self-Assembled Nanostructured LaFeO3 Perovskite Thin Films

AuN films - structure and chemical binding

Lanthanum-Doped Lead Titanate Ferro- and Piezoelectric Thin Films Prepared by Polymeric Precursor Method

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