Precession Electron Diffraction for the characterization of twinning in pseudo-symmetrical crystals: case of coesite

2009 ◽  
pp. 193-194
Author(s):  
D. Jacob ◽  
P. Cordier ◽  
J. P. Morniroli ◽  
H. P. Schertl
Keyword(s):  
Electron Diffraction ◽  
Precession Electron Diffraction

scholarly journals Crystallographic characterization of polycrystalline materials: High resolution automated crystallite orientation & phase mapping and Precession electron diffraction ring patterns

2010 ◽  
Vol 16 (S2) ◽  
pp. 768-769 ◽  
Author(s):  
S Rouvimov ◽  
P Moeck ◽  
E Rauch ◽  
Y Maniette ◽  
D Bultreys
Keyword(s):  
High Resolution ◽  
Electron Diffraction ◽  
Polycrystalline Materials ◽  
Crystallite Orientation ◽  
Diffraction Ring ◽  
Precession Electron Diffraction ◽  
Phase Mapping

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

Application of precession electron diffraction to the characterization of (021) twinning in pseudo-hexagonal coesite

2009 ◽  
Vol 94 (5-6) ◽  
pp. 684-692 ◽  
Author(s):  
D. Jacob ◽  
P. Cordier ◽  
J.-P. Morniroli ◽  
H.-P. Schertl
Keyword(s):  
Electron Diffraction ◽  
Precession Electron Diffraction

Characterization of submicrometer fluid Inclusions in minerals by Analytical/Transmission Electron Microscopy and electron diffraction

1990 ◽  
Vol 48 (4) ◽  
pp. 424-424
Author(s):  
George Guthrie ◽  
David Veblen
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Electron Microscope ◽  
Electron Diffraction ◽  
Light Microscopy ◽  
Fluid Inclusions ◽  
Energy Dispersive Spectrometer ◽  
Analytical Transmission Electron Microscopy ◽  
Transmission Electron

The nature of a geologic fluid can often be inferred from fluid-filled cavities (generally <100 μm in size) that are trapped during the growth of a mineral. A variety of techniques enables the fluids and daughter crystals (any solid precipitated from the trapped fluid) to be identified from cavities greater than a few micrometers. Many minerals, however, contain fluid inclusions smaller than a micrometer. Though inclusions this small are difficult or impossible to study by conventional techniques, they are ideally suited for study by analytical/ transmission electron microscopy (A/TEM) and electron diffraction. We have used this technique to study fluid inclusions and daughter crystals in diamond and feldspar.Inclusion-rich samples of diamond and feldspar were ion-thinned to electron transparency and examined with a Philips 420T electron microscope (120 keV) equipped with an EDAX beryllium-windowed energy dispersive spectrometer. Thin edges of the sample were perforated in areas that appeared in light microscopy to be populated densely with inclusions. In a few cases, the perforations were bound polygonal sides to which crystals (structurally and compositionally different from the host mineral) were attached (Figure 1).

scholarly journals Synthesis and characterization of Fe, Co, and Ni colloids in 2-mercaptoethanol

2020 ◽  
Vol 10 ◽  
pp. 184798042096688
Author(s):  
Galo Cárdenas-Triviño ◽  
Sergio Triviño-Matus
Keyword(s):  
Electron Microscopy ◽  
Electron Diffraction ◽  
Colloidal Dispersions ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Chemical Liquid Deposition ◽  
Liquid Deposition

Metal colloids in 2-mercaptoethanol using nanoparticles (NPs) of iron (Fe), cobalt (Co), and nickel (Ni) were prepared by chemical liquid deposition method. Transmission electron microscopy, electron diffraction, UV-VIS spectroscopy, and scanning electron microscopy with electron dispersive X-ray spectroscopy characterized the resulting colloidal dispersions. The NPs exhibited sizes with ranges from 9.8 nm for Fe, 3.7 nm for Co, and 7.2 nm for Ni. The electron diffraction shows the presence of the metals in its elemental state Fe (0), Co (0), and Ni (0) and also some compounds FeO (OH), CoCo2S4, and NiNi2S4.

Sign in / Sign up

Export Citation Format

Share Document