Direct measurements of space-charge-regions in individual nanometer-scale crystals of Al2O3-rich magnesium-aluminate-spinel using off-axis electron holography and electron energy-loss spectroscopy

2021 ◽  
pp. 117174
Author(s):  
Mahdi Halabi ◽  
Amit Kohn ◽  
Shmuel Hayun
Keyword(s):  
Energy Loss ◽  
Space Charge ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Magnesium Aluminate ◽  
Nanometer Scale ◽  
Electron Holography ◽  
Magnesium Aluminate Spinel ◽  
Direct Measurements ◽  
Electron Energy Loss

Nanometer-scale measurements of Fe3+/ΣFe by electron energy-loss spectroscopy: A cautionary note

2004 ◽  
Vol 89 (11-12) ◽  
pp. 1610-1616 ◽  
Author(s):  
Laurence A. J. Garvie ◽  
Thomas J. Zega ◽  
Peter Rez ◽  
Peter R. Buseck
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Nanometer Scale ◽  
Cautionary Note ◽  
Electron Energy Loss

Parallel Electron Energy Loss Spectroscopy of a Cu-Be Alloy

1992 ◽  
Vol 50 (2) ◽  
pp. 1252-1253
Author(s):  
A.J. Strutt ◽  
D.B. Williams
Keyword(s):  
Phase Diagram ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Incident Beam ◽  
Ion Milling ◽  
Direct Measurements ◽  
Acquisition Mode ◽  
Electron Energy Loss ◽  
Nominal Stoichiometry

Although the Cu-Be binary system has been studied by previous investigators and recently reviewed, no direct measurements have been made concerning the chemistry of the γ-phase, which has a nominal stoichiometry CuBe. Quantitative parallel electron energy loss spectroscopy (PEELS) has been used in this investigation of a Cu, 1.8 wt.% Be, 0.3 wt.% Co alloy to determine a section of the γ/(α+γ) phase boundary of the Cu-Be phase diagram. Sections of alloy (in sheet form) were encapsulated in evacuated quartz capsules to prevent oxidation and isothermally aged in the temperature range 400 - 600°C. TEM specimens were prepared by punching disks from the sheet, dimpling and ion milling. Spectra were acquired using a Philips EM400 TEM/STEM in the TEM image mode, and with a Gatan parallel recording EELS spectrometer. The acquisition mode allowed for the use of a relatively large (yet accurately known) collection angle. The incident beam convergence angle was also determined, so that a beam convergence correction could be used to calculate the true collection angle.

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