Lattice and Peak Profile Parameters in GIXD Technique

Goryczka, Tomasz; Dercz, Grzegorz; Pająk, L.; Łągiewka, E.

doi:10.4028/www.scientific.net/ssp.130.281

Cited by 13 publications

(8 citation statements)

References 5 publications

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“…However, fixation of an angle (α angle) between the primary X-ray beam and sample surface leads to asymmetry in focusing of rays in GIXD technique. Accurate measurements carried out, using LaB 6 and Al 2 O 3 standard reference materials, have shown that parameters of diffraction line such as: position, intensity, half-width and peak shape differ from those obtained in classical Bragg-Brentano (B-B) geometry [5]. However, the crystallite size of these standards was in micro-scale.…”

Section: Introductionmentioning

confidence: 97%

Crystallite Size Determination of MgO Nanopowder from X-Ray Diffraction Patterns Registered in GIXD Technique

Goryczka

Dercz

Prusik

et al. 2010

SSP

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The problem of the crystallite size determination for nanomaterials from X-ray diffraction data obtained in asymmetrical GIXD geometry was analyzed. The studies were performed on nanocrystalline MgO powder prepared by sol-gel synthesis. The nanopowder was preliminary characterized from X-ray diffraction pattern registered in classical Bragg-Brentano geometry and electron microscope observation. The estimated crystallite size, calculated form Williamson-Hall method, equals to 5 nm whereas the lattice distortion is negligible (0.1%). The X-ray diffraction patterns were registered in 30-135º 2θ range using tunnel GIXD technique for the incident α angle: 0.25; 0.5; 1; 2.5 and 5 degrees, respectively. Additional broadening of diffraction lines originated from applied geometry was observed. The calculated crystallite size deviate significantly in comparison to results obtained from classical Bragg-Brentano data. Corrections for additional line broadening were determined, which should be applied for accurate crystallite size calculation in studies of thin nanocrystalline layers using GIXD technique.

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Section: Introductionmentioning

confidence: 97%

Crystallite Size Determination of MgO Nanopowder from X-Ray Diffraction Patterns Registered in GIXD Technique

Goryczka

Dercz

Prusik

et al. 2010

SSP

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“…Figure 4 shows the È-scan results of {440} reflections, where one can see that there are three To gain insight into the heterostructures in more detail, we further analyzed their in-plane structures along the Si( " 1 110) plane using the GIXD with synchrotron radiation of 10 keV. 13,14) The GIXD technique is very powerful in investigating the in-plane structures of thin films due to its superior surface sensitivity. The synchrotron radiation with high energy is selected throughout the measurement because of the insufficient energy provided by the usual X-ray.…”

Section: Resultsmentioning

confidence: 99%

Crystalline Nanoscale M<SUB>2</SUB>O<SUB>3</SUB> (M=Gd, Nd) Thin Films Grown by Molecular Beam Epitaxy on Si(111)

2009

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We report the growth, crystal structures, and orientation relationships of nanoscale M 2 O 3 (M ¼ Gd, Nd) thin films on Si(111) substrates using molecular beam epitaxy. We find that the grown Gd 2 O 3 and Nd 2 O 3 layers share the cubic bixbyite structure, have single orientations, and are well crystallized. The epitaxial oxides are also found to be of threefold symmetry, having orientation relationships ½111 M2O3 == ½111 Si and ½1 " 1 10 M2O3 == ½ " 1 110 Si with respect to the Si substrates. Further investigations along in-plane direction show that the M 2 O 3 layers are well matched to the double unit cell of Si substrates, with slightly negative mismatch for the Gd 2 O 3 and positive for the Nd 2 O 3 .

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“…The grazing incidence X-ray diffraction (GIXD) patterns were recorded over a 2θ range from 10 • to 80 • with a 0.05 • step size for the incident angle (α = 0.25 • ). 21,22 Electrochemical analysis.-The corrosion resistance of the titanium alloys samples was investigated using Ringer's solution, which is composed of 8.6 g dm −3 NaCl, 0.3 g dm −3 KCl, and 0.48 g dm −3 CaCl 2 • 6H 2 O (Baxter, USA). The apparatus included a standard twochamber electrolysis cell with three electrodes: a working electrode, a platinum auxiliary electrode and a Haber-Luggin capillary with a reference electrode (saturated calomel electrode -SCE).…”

Section: Methodsmentioning

confidence: 99%

Multilayer Bioactive Coatings Formed on the Vanadium-Free Titanium Alloys via PEO and EPD Processes

Kazek-Kęsik

Łastówka

Donesz-Sikorska

et al. 2015

J. Electrochem. Soc.

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In this paper results of the surface modification of the Ti-15Mo, Ti-13Nb-13Zr, Ti-6Al-7Nb alloys by plasma electrolytic oxidation (PEO) coupled by electrophoretic deposition (EPD) technique were presented. On the porous oxide layers hydroxyapatite (HA) particles were deposited, filled cracks and pores of the coatings. The surfaces of the titanium alloys were modified to enhance their corrosion resistance and bioactivity in biological environment. The influence of voltage, time of the EPD process, and bath composition on hydroxyapatite particles deposition on the porous samples were studied. Microstructure, cross-section, phase composition, surface roughness and wettability of the multilayer coatings were determined. Electrochemical investigations shown, that the titanium alloys surfaces modification improved corrosion resistance of the substrates in Ringer solution. Scratch testing shown that the coatings exhibit good adhesion to the substrate. The coatings formed on the titanium alloys surface were bioactive. After simulated body fluid (SBF) immersion, on all of the samples the apatite crystallized and covered the coatings.

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Lattice and Peak Profile Parameters in GIXD Technique

Cited by 13 publications

References 5 publications

Crystallite Size Determination of MgO Nanopowder from X-Ray Diffraction Patterns Registered in GIXD Technique

Crystallite Size Determination of MgO Nanopowder from X-Ray Diffraction Patterns Registered in GIXD Technique

Crystalline Nanoscale M<SUB>2</SUB>O<SUB>3</SUB> (M=Gd, Nd) Thin Films Grown by Molecular Beam Epitaxy on Si(111)

Multilayer Bioactive Coatings Formed on the Vanadium-Free Titanium Alloys via PEO and EPD Processes

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