A Comparison of Electron Energy Loss Spectroscopy and Electron Diffraction for Polycrystalline and Xe+ Irradiated Nickel Silicides

1983 ◽  
Vol 25 ◽  
Author(s):  
J.C. Barbour ◽  
L.A. Grunes ◽  
J.W. Mayer
Keyword(s):  
Electron Diffraction ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Nickel Silicide ◽  
Core Level ◽  
Electronic Density ◽  
Peak Energy ◽  
Diffraction Patterns ◽  
Electron Energy Loss

ABSTRACTVariations in the valence and core level electron energy loss spectroscopy (EELS) peaks are studied as a function of nickel silicide composition.Analysis of the EELS spectra in comparison with the electron diffraction patterns show the plasmon energies fingerprint the silicide phases. The EELS core level spectra reflect the Si bonding and the electronic density of states in each phase.Irradiated Ni 2Si becomes amorphous causing a change in the plasmon peak energy and the Si L23peaks.

scholarly journals Mapping structure and morphology of amorphous organic thin films by 4D-STEM pair distribution function analysis

Microscopy ◽  
2019 ◽  
Vol 68 (4) ◽  
pp. 301-309 ◽  
Author(s):  
Xiaoke Mu ◽  
Andrey Mazilkin ◽  
Christian Sprau ◽  
Alexander Colsmann ◽  
Christian Kübel
Keyword(s):  
Distribution Function ◽  
Electron Diffraction ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Pair Distribution Function ◽  
Phase Distribution ◽  
Function Analysis ◽  
New Approach ◽  
Electron Energy Loss

Abstract Imaging the phase distribution of amorphous or partially crystalline organic materials at the nanoscale and analyzing the local atomic structure of individual phases has been a long-time challenge. We propose a new approach for imaging the phase distribution and for analyzing the local structure of organic materials based on scanning transmission electron diffraction (4D-STEM) pair distribution function analysis (PDF). We show that electron diffraction based PDF analysis can be used to characterize the short- and medium-range order in aperiodically packed organic molecules. Moreover, we show that 4D-STEM-PDF does not only provide local structural information with a resolution of a few nanometers, but can also be used to image the phase distribution of organic composites. The distinct and thickness independent contrast of the phase image is generated by utilizing the structural difference between the different types of molecules and taking advantage of the dose efficiency due to use of the full scattering signal. Therefore, this approach is particularly interesting for imaging unstained organic or polymer composites without distinct valence states for electron energy loss spectroscopy. We explore the possibilities of this new approach using [6,6]-phenyl-C61- butyric acid methyl ester (PC61BM) and poly(3-hexylthiophene-2,5-diyl) (P3HT) as the archetypical and best-investigated semiconductor blend used in organic solar cells, compare our phase distribution with virtual dark-field analysis and validate our approach by electron energy loss spectroscopy.

CO adsorption on Pd(111): a high-resolution core level photoemission and electron energy loss spectroscopy study

2000 ◽  
Vol 470 (1-2) ◽  
pp. 171-185 ◽  
Author(s):  
S. Surnev ◽  
M. Sock ◽  
M.G. Ramsey ◽  
F.P. Netzer ◽  
M. Wiklund ◽  
...  
Keyword(s):  
High Resolution ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Co Adsorption ◽  
Core Level ◽  
Spectroscopy Study ◽  
Electron Energy Loss
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