Line Profile Fitting: The Case of fcc Crystals Containing Stacking Faults

Ustinov, А.I.; Olikhovska, L.; Budarina, N.; Bernard, Frédéric

doi:10.1007/978-3-662-06723-9_13

Cited by 17 publications

(8 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 see ESI 6 †) pleads for this hypothesis. 65 It may come from an ordered arrangement of the Na + and H + ions. According to the Bragg law, the peak at d = 0.66 ± 0.01 nm (2θ = 13.39°) would be the fifth-order harmonic of the peak at d = 3.31 ± 0.01 nm (2θ = 2.67°) and the one at d = 0.62 ± 0.01 nm would be the third-order harmonic of the peak at d = 1.86 ± 0.01 nm (Fig.…”

Section: See Esi 5 †)mentioning

confidence: 99%

“…-Texturing: considering the morphology of the synthesized nanoparticles and the preparation of the XRD samples, a texturing phenomenon, matching a preferential orientation of crystals, could explain the observed spectacular variations in intensity. 65 -Stack defects: the organization of these nanostructures into layers and their complex chemical composition which is not clearly determined, stack defects leading to slight shifts of diffraction peaks can be considered. 65 Given the complexity of the material, a combination of all these hypotheses seems the most likely explanation to these particular XRD patterns of nanoparticles synthesized from a 5-10 nm anatase TiO 2 precursor.…”

Section: See Esi 5 †)mentioning

confidence: 99%

“…65 -Stack defects: the organization of these nanostructures into layers and their complex chemical composition which is not clearly determined, stack defects leading to slight shifts of diffraction peaks can be considered. 65 Given the complexity of the material, a combination of all these hypotheses seems the most likely explanation to these particular XRD patterns of nanoparticles synthesized from a 5-10 nm anatase TiO 2 precursor.…”

Section: See Esi 5 †)mentioning

confidence: 99%

See 2 more Smart Citations

A multi-step mechanism and integrity of titanate nanoribbons

et al. 2015

View full text Add to dashboard Cite

A one-step hydrothermal treatment of TiO2 powders under strongly basic conditions has been used to synthesize titanate nanoribbons. The nanoparticles were thoroughly characterized using several methods including transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectrometry (XPS) to determine their morphological, structural and chemical characteristics. The influence of the nature and size of the TiO2 precursor and of the reaction duration on the formation of the nanoribbons was investigated. The conditions required to obtain only titanate nanoribbons with a width ranging from 100 to 200 nm and several tens of micrometers in length were determined: the optimum precursor's grain size is about 25 nm and the reaction duration should be at least 20 h. Starting from our experimental results, we propose a multi-step mechanism of formation. In addition, a study of the integrity of the titanate nanoribbon structure reveals that they are made of an assembly of smaller ribbons juxtaposed and piled up on top of one another.

show abstract

Section: See Esi 5 †)mentioning

confidence: 99%

Section: See Esi 5 †)mentioning

confidence: 99%

Section: See Esi 5 †)mentioning

confidence: 99%

See 1 more Smart Citation

A multi-step mechanism and integrity of titanate nanoribbons

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The twins with twin boundaries parallel to the surface cannot be detected due to the fibre texture. Finally, according to [59], when looking at the {111} reflection, extrinsic (resp. intrinsic) stacking faults induce a peak centre of mass to shift toward low (resp.…”

Section: Discussionmentioning

confidence: 99%

X-ray diffraction and stress relaxations to study thermal and stress-assisted annealings in nanocrystalline gold thin films

et al. 2019

View full text Add to dashboard Cite

The dependence on thermal history of the plasticity mechanisms occurring in nanocrystalline gold thin films is evidenced thanks to relaxation tests combined with in-situ synchrotron X-ray diffraction. The two techniques complement one another. The activation parameters show that the films deform mainly by dislocations and give indications about their mean free paths, whereas the Bragg peak positions, widths and areas bring invaluable information on residual stress as well as on some plasticity properties, like dislocation storage inside the grains or grain rotations. For the demonstration, two sputter-deposited nanocrystalline 50 nm-thin films deposited onto stretchable substrates are studied. It is shown that an as-grown sample (at a homologous temperature of 0.22) presents a stress-assisted annealing, thus decreasing its initial defect density, whereas if a thermal annealing (three hours at 200°C, corresponding to a homologous temperature of 0.35) has been applied to the sample before the tensile test, it deforms by conventional plasticity, and the dislocations are not stored inside the grains. These mechanisms lead to different work-hardening properties. This work shows how a moderate annealing can have a profound influence on the mechanical behaviour of these thin films.

show abstract

“…Stacking faults are widely known to have considerable effect on the diffraction patterns. Contrary to where each main (strongest) diffraction peak is in the same position as the corresponded Bragg reflection of the basic structure [1], the occurrence of the stacking faults affects diffraction-peak positions of the basic structure [5][6][7][8][9]. It is true for an ordered as well.…”

Section: Introductionmentioning

confidence: 99%

A New Diffraction Approach To Crystal Structure Determination of Nano-twined Martensites

Olikhovska

Ustinov

Glavatska

et al. 2009

ESOMAT 2009 - 8th European Symposium on Martensitic Transformations

View full text Add to dashboard Cite

Abstract. The intensity diffracted by crystals containing twin boundaries of the system {110}, 0 1 1 were calculated in the reciprocal space assuming a short-range order in the twin-boundary distribution. The calculated intensity distributions have been analyzed to find the effect on the diffraction pattern of such parameters as (i) ratio b/a (c/a) between the crystal lattice constants, (ii) density of the twin boundaries, (iii) ratio between thicknesses of the twin-related lamellae, and (iv) crystallographic direction along which the intensity distribution is simulated. It is found that each of these parameters affects the diffraction-peak profiles and positions including the diffraction peaks of the basic structure. Therefore, the problem of the diffraction pattern identification for a twin-modulated crystal should be approached only by a combined consideration of the diffraction features.

show abstract

Line Profile Fitting: The Case of fcc Crystals Containing Stacking Faults

Cited by 17 publications

References 30 publications

A multi-step mechanism and integrity of titanate nanoribbons

A multi-step mechanism and integrity of titanate nanoribbons

X-ray diffraction and stress relaxations to study thermal and stress-assisted annealings in nanocrystalline gold thin films

A New Diffraction Approach To Crystal Structure Determination of Nano-twined Martensites

Contact Info

Product

Resources

About