Analytical Determination of Magnetic and Quadrupole Hyperfine Parameters from Mössbauer Spectra

1971 ◽  
pp. 39-58 ◽  
Author(s):  
P. G. L. Williams ◽  
G. M. Bancroft
Keyword(s):  
Mössbauer Spectra ◽  
Analytical Determination ◽  
Hyperfine Parameters ◽  
Mossbauer Spectra

scholarly journals Mössbauer study of Fe phases in terrestrial olivine basalts from southern Egypt

Mineralogia ◽  
2013 ◽  
Vol 44 (1-2) ◽  
pp. 3-12 ◽  
Author(s):  
Kamaleldin M. Hassan ◽  
Julius Dekan
Keyword(s):  
Optical Microscopy ◽  
Crystal Chemistry ◽  
Mössbauer Spectra ◽  
Mossbauer Spectroscopy ◽  
X Ray Diffraction ◽  
Mössbauer Study ◽  
Hyperfine Parameters ◽  
X Ray ◽  
Mossbauer Spectra ◽  
Oxidized Iron

AbstractOlivine basalts from southern Egypt were studied by 57Fe Mössbauer spectroscopy at 297 and 77 K, and by optical microscopy and X-ray diffraction. The 57Fe Mössbauer spectra show three-magnetic sextets, three doublets of ferrous (Fe2+), and a weak ferric (Fe3+) doublet that is attributable to a nanophase oxide (npOx). The magnetic sextets relate to titanomagnetite and the Fe2+ doublets to olivine, pyroxene, and ulvöspinel. Variations in the hyperfine parameters of the various Fe components are attributed to changes in the local crystal chemistry. The intensity of oxidation (Fe3+/ΣFe) in the rocks varies from 20-27% with the oxidized iron largely residing in the titanomagnetite.

MossA: a program for analyzing energy-domain Mössbauer spectra from conventional and synchrotron sources

2012 ◽  
Vol 45 (2) ◽  
pp. 329-331 ◽  
Author(s):  
Clemens Prescher ◽  
Catherine McCammon ◽  
Leonid Dubrovinsky
Keyword(s):  
Line Shape ◽  
Amorphous Materials ◽  
Mössbauer Spectra ◽  
Hyperfine Parameters ◽  
Synchrotron Source ◽  
User Input ◽  
Mossbauer Spectra ◽  
Lorentzian Line ◽  
Energy Domain ◽  
Straightforward Approach

The programMossAprovides a straightforward approach to the fitting of57Fe conventional and synchrotron energy-domain Mössbauer spectra. Sites can be defined simply by mouse clicks and hyperfine parameters can be constrained to constant values, within specific ranges, and can be coupled linearly between different subspectra. The program includes a full transmission integral fit with Lorentzian line shape (conventional source) or Lorentzian-squared line shape (synchrotron source). The fitting process is graphically displayed in real time while fitting and can be interrupted at any time. Gaussian-shaped quadrupole splitting distributions for analyzing nonmagnetic amorphous materials are included.MossAis designed especially for the rapid and comprehensive analysis of complex Mössbauer spectra, made possible by its native graphical user input.

Synthese, Struktur und Sb-Mößbauer-Spektren kovalenter und ionischer Tetraorganoantimon(V) -Verbindungen / Synthesis, Structure and Sb-Mößbauer Spectra of Covalent and Ionic Tetraorganoantimony(V) Compounds

1983 ◽  
Vol 38 (11) ◽  
pp. 1477-1483 ◽  
Author(s):  
Hubert Schmidbaur ◽  
Beatrix Milewski-Mahrla ◽  
Fritz E. Wagner
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Anthranilic Acid ◽  
Mössbauer Spectra ◽  
Crystal Structure Determination ◽  
Mossbauer Spectra

AbstractTetramethylstibonium and tetraphenylstibonium oxinate(1, 2) and anthranilate (4, 5) have been prepared from the antimony pentaorganyls and 8-oxy-quinoline or anthranilic acid, respectively. The crystal structure determination of 1 revealed covalent molecules with planar bidentate oxinate as part of a distorted coordination octahedron at antimony. -121Sb-Mößbauer spectra of 1, 2, 4, 5 and of tetramethylstibonium acetylacetonate (3) are also in agreement with covalent structures, but a pentacoordinate environment of Sb is more likely for the anthranilates 4, 5. The spectra of the hydrogendicarboxylates 6-9, however, point to ionic stuctures with, if any, only weak donor interactions of the anions with the stibonium cations.

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