HCP films are frequently grown and characterized at the US Army Combat Capabilities Development Command Army Research Laboratory, in particular alloys of gallium nitride, indium nitride, aluminum nitride, and silicon carbide.
Selective control of fcc and hcp crystal structures in Au–Ru solid ...
Feb 6, 2018 · We succeed in selectively synthesizing fcc and hcp AuRu solid-solution alloy NPs at the Au/Ru ratio of 1:3. The structures of the obtained NPs are investigated using synchrotron powder X-ray...
X-ray diffraction (XRD) patterns of hcp-Zr metallic ... - ResearchGate
X-ray diffraction (XRD) patterns of hcp-Zr metallic powder that were high-energy ballmilled for (a) 0 ks, (b) 22 ks, (c) 43 ks, (d) 86 ks, and (e) 259 ks of the reactive ball milling (RBM)...
Figure 1: XRD patterns for (a) fcc and (b) hcp Ru NPs at room...
To reveal the origin of the CO oxidation activity of Ruthenium nanoparticles (Ru NPs), we structurally characterized Ru NPs through Rietveld refinement analysis of high-energy X-ray diffraction...
3 Chem 253, UC, Berkeley The amplitude of the rays scattered at d 1, d2, d3…. are in the ratios : The net ray scattered by the entire cell: 2 I(hkl) Sk e iK d j n j iK d k S e j 1 Chem 253, UC, Berkeley
TEM and XRD characterisation of commercially pure α-Ti made …
Apr 1, 2012 · The hcp-structured α-Ti is one of the two basic phases (α-Ti and β-Ti) in Ti materials. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to analyse the α-Ti phase in both as-sintered and as-cast α-Ti materials.
Crystal-phase and surface-structure engineering of ruthenium ...
Mar 18, 2020 · Whereas 2-nm Ru nanocrystals took an hcp phase, the XRD pattern of 6-nm nanocrystals indicated the presence of both hcp-Ru and fcc-Ru (ref. 24).
Single crystal samples yield two dimensional arrays of spots. Polycrystalline samples average over all orientations. The XRD powder pattern can be used to determine the lattice parameters of the crystal. A typical XRD powder pattern. The data …
Crystallographic dependence of CO2 hydrogenation pathways over HCP …
Oct 15, 2022 · Guided by the XRD analysis, Co 3 O 4 is loaded in the fixed-bed reactor and pretreated in H 2 for in situ reduction to HCP-Co at 350 °C or to FCC-Co at 550 °C, prior to CO 2 hydrogenation. As shown in Fig. 1 d, the CO 2 conversions over both HCP-Co and FCC-Co increase with the increasing temperatures.
Learn how to operate an x‐ray diffractometer. Index the diffraction peaks from elements with cubic and hexagonal crystal structures. Measure and understand the structure factor of simple crystals. Understand statistical uncertainties and systematic errors in a measurement.