Bismuth Ruthenium Oxides. Neutron Diffraction and Photoelectron Spectroscopic Study of Bi2Ru2O7 and Bi3Ru3O11

1993 ◽  
Vol 46 (12) ◽  
pp. 1897 ◽  
Author(s):  
GR Facer ◽  
MM Elcombe ◽  
BJ Kennedy
Keyword(s):  
Neutron Diffraction ◽  
Surface Oxidation ◽  
Rietveld Analysis ◽  
Photoelectron Spectra ◽  
Final State ◽  
Mixed Valency ◽  
X Ray ◽  
Ruthenium Oxides ◽  
Line Shapes ◽  
Powder Neutron Diffraction Data

The structures of Bi3Ru3O11, a = 9.3050(2)Ǻ, Pn3, and Bi2Ru2O7, a = 10.2957(1)Ǻ, Fd3m, have been redetermined by Rietveld analysis of powder neutron diffraction data. For both compounds there is no evidence for appreciable oxygen non- stoichiometry . X-Ray photoelectron spectra of both compounds show unusual line shapes. In the case of Bi3Ru3O11 this is a result of the mixed valency and surface oxidation. In Bi2Ru2O7 final state effects appear to be important.

scholarly journals Curve fitting complex X-ray photoelectron spectra of graphite-supported copper nanoparticles using informed line shapes

2020 ◽  
Vol 505 ◽  
pp. 143841 ◽  
Author(s):  
Vincent Fernandez ◽  
Daniyal Kiani ◽  
Neal Fairley ◽  
François-Xavier Felpin ◽  
Jonas Baltrusaitis
Keyword(s):  
Copper Nanoparticles ◽  
Curve Fitting ◽  
Photoelectron Spectra ◽  
X Ray ◽  
Line Shapes

scholarly journals X-ray photoelectron spectra and Auger studies of the surface oxidation of cobalt

1980 ◽  
Vol 89 (2) ◽  
pp. 145-151
Author(s):  
M S Hegde ◽  
A Srinivasan ◽  
K Jagannathan ◽  
G C Chaturvedi
Keyword(s):  
Surface Oxidation ◽  
Photoelectron Spectra ◽  
X Ray

Final-state effects in the x-ray photoelectron spectra of cubic sodium-tungsten bronzes

1977 ◽  
Vol 16 (2) ◽  
pp. 697-705 ◽  
Author(s):  
J. -N. Chazalviel ◽  
M. Campagna ◽  
G. K. Wertheim ◽  
H. R. Shanks
Keyword(s):  
Photoelectron Spectra ◽  
Final State ◽  
X Ray ◽  
Sodium Tungsten

Study of transition metal oxides by photoelectron spectroscopy

1979 ◽  
Vol 367 (1729) ◽  
pp. 239-252 ◽  
Keyword(s):  
Transition Metal Oxides ◽  
Photoelectron Spectroscopy ◽  
Metal Ion ◽  
Binding Energies ◽  
Photoelectron Spectra ◽  
Final State ◽  
Metal Insulator ◽  
X Ray ◽  
Valence States ◽  
Related Series

Systematics in the X-ray photoelectron spectra (X. p. e. s.) of Ti, V, Cr, Mn and Nb oxides with the metal ion in different oxidation states as well as of related series of mono-, sesqui- and di-oxides of the first row transi­tion metals have been investigated in detail. Core level binding energies, spin-orbit splittings and exchange splittings are found to exhibit inter­esting variations with the oxidation state of the metal or the nuclear charge The 3d binding energies of the monoxides show a proportionality to Goodenough’s ( R — R c ). Other aspects of interest in the study are the satellite structure and final state effects in the X. p. e. s. of the oxides, and identification of different valence states in oxides of the general formulae M n O 2 n -1 and M 3 O 4 . The nature of changes in the 3d bands of oxides under­-going metal-insulator transitions is also indicated.

Line shapes and satellites in high-resolution x-ray photoelectron spectra of large π-conjugated organic molecules

2004 ◽  
Vol 121 (20) ◽  
pp. 10260-10267 ◽  
Author(s):  
A. Schöll ◽  
Y. Zou ◽  
M. Jung ◽  
Th. Schmidt ◽  
R. Fink ◽  
...  
Keyword(s):  
High Resolution ◽  
Organic Molecules ◽  
Photoelectron Spectra ◽  
X Ray ◽  
Line Shapes ◽  
Conjugated Organic Molecules

scholarly journals Investigating the annealing dependency of Al/Si distribution in Eifel sanidine

2014 ◽  
Vol 70 (a1) ◽  
pp. C1107-C1107
Author(s):  
Johannes Kähn ◽  
Daniel Többens ◽  
Jens-Uwe Hoffmann ◽  
Manfred Reehuis ◽  
Susan Schorr
Keyword(s):  
Neutron Diffraction ◽  
Single Crystal ◽  
Powder Diffraction ◽  
Direct Determination ◽  
Form Factors ◽  
Rietveld Analysis ◽  
Indirect Methods ◽  
X Ray ◽  
Fine Resolution ◽  
Direct And Indirect Methods

Sanidine is the monoclinic high-T modification of K-rich alkalifeldspars. Annealing at T > 9000C usually causes disordering of Al/Si distribution at the two non-equivalent tetrahedral sites, but it is supposedly possible to disorder samples of sanidine from Volkesfeld/Eifel at notably lower temperatures and shorter times [1]. To investigate this behavior and compare various approaches to obtain the Al/Si distribution, samples from different Eifel locations and Madagascar have been studied. Al/Si order was determined by direct and indirect methods, including X-ray and neutron diffraction of powder and single crystal samples. Neutron powder diffraction experiments were executed at the Fine Resolution Neutron Powder Diffractometer E9, single crystal neutron diffraction at the 4-circle Diffractometer E5 and diffuse neutron scattering experiments at the Flat-Cone Diffractometer E2, all located at the Berlin Research Reactor BERII. The Al/Si distribution was determined directly, refining site occupancies by applying Rietveld analysis to powder diffraction data and XTAL for single crystal data. This approach is inapplicable when using X-ray data, due to similar atomic form factors of Al3+ and Si4+, thus indirect methods [2,3,4] were applied. X-ray powder diffraction was performed at Helmholtz Centre Berlin, single crystal X-ray diffraction was done at Ruhr-University Bochum. The obtained data was processed using Rietveld refinement and ShelXL software, respectively. It was possible to verify a dependency of decreasing Al/Si order on increasing annealing times and temperatures. Interestingly we observed different results from direct and indirect methods, regardless whether samples were untreated or annealed. Applying the direct determination method, a stronger change of Al/Si distribution during annealing was revealed. Moreover, diffuse scattering of untreated and annealed samples was detected, which may arise from hydron incorporated in the crystal lattice.

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