Determination of manganese valence states in (Mn3+, Mn4+) minerals by electron energy-loss spectroscopy

2010 ◽  
Vol 95 (11-12) ◽  
pp. 1741-1746 ◽  
Author(s):  
S. Zhang ◽  
K. J. T. Livi ◽  
A.-C. Gaillot ◽  
A. T. Stone ◽  
D. R. Veblen
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Valence States ◽  
Manganese Valence ◽  
Electron Energy Loss

Fast Mapping of the Cobalt-Valence State in Ba0.5Sr0.5Co0.8Fe0.2O3-dby Electron Energy Loss Spectroscopy

2013 ◽  
Vol 19 (6) ◽  
pp. 1595-1605 ◽  
Author(s):  
Philipp Müller ◽  
Matthias Meffert ◽  
Heike Störmer ◽  
Dagmar Gerthsen
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Valence State ◽  
Hexagonal Phase ◽  
Fast Method ◽  
White Line ◽  
Valence States ◽  
Electron Energy Loss

AbstractA fast method for determination of the Co-valence state by electron energy loss spectroscopy in a transmission electron microscope is presented. We suggest the distance between the Co-L3and Co-L2white-lines as a reliable property for the determination of Co-valence states between 2+ and 3+. The determination of the Co-L2,3white-line distance can be automated and is therefore well suited for the evaluation of large data sets that are collected for line scans and mappings. Data with a low signal-to-noise due to short acquisition times can be processed by applying principal component analysis. The new technique was applied to study the Co-valence state of Ba0.5Sr0.5Co0.8Fe0.2O3-d(BSCF), which is hampered by the superposition of the Ba-M4,5white-lines on the Co-L2,3white-lines. The Co-valence state of the cubic BSCF phase was determined to be 2.2+ (±0.2) after annealing for 100 h at 650°C, compared to an increased valence state of 2.8+ (±0.2) for the hexagonal phase. These results support models that correlate the instability of the cubic BSCF phase with an increased Co-valence state at temperatures below 840°C.

Determination of Elemental Ratio in an Atomic Column by Electron Energy Loss Spectroscopy

ACS Nano ◽  
2016 ◽  
Vol 10 (7) ◽  
pp. 6680-6684 ◽  
Author(s):  
Mitsutaka Haruta ◽  
Yoshiteru Hosaka ◽  
Noriya Ichikawa ◽  
Takashi Saito ◽  
Yuichi Shimakawa ◽  
...  
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Atomic Column ◽  
Elemental Ratio ◽  
Electron Energy Loss

Determination of bonding in amorphous carbons by electron energy loss spectroscopy, Raman scattering and X-ray reflectivity

2000 ◽  
Vol 266-269 ◽  
pp. 765-768 ◽  
Author(s):  
A.C Ferrari ◽  
B Kleinsorge ◽  
G Adamopoulos ◽  
J Robertson ◽  
W.I Milne ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
X Ray ◽  
Electron Energy Loss

The determination of Ti, Mn and Fe oxidation states in minerals by electron energy-loss spectroscopy

1985 ◽  
Vol 18 (1-4) ◽  
pp. 285-289 ◽  
Author(s):  
Max T. Otten ◽  
Barbara Miner ◽  
James H. Rask ◽  
Peter R. Buseck
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Oxidation States ◽  
Fe Oxidation ◽  
Electron Energy Loss
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