Polarized TiKβ Valence Band Spectra of TiO<sub>2</sub> (Rutile)

Dräger, G.; Brümmer, O.; Heera, V.; Seifert, Gotthard; Ziesche, P.

doi:10.1002/pssb.2221040123

Cited by 9 publications

(2 citation statements)

References 10 publications

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“…The data from our database are presented as >, while all the other data found in the literature are shown as circles. 9,[35][36][37]44,45,[47][48][49][50][51]53,[55][56][57][58][59][60][61][62][63][64][65][66] All obtained fit parameters are summarized in Table 3. The f 2 (Z) parameters for Fe, Co, Ni, and Cu are scaled values based on the Asada et al 67 data, as explained earlier.…”

Section: Relative Intensitiesmentioning

confidence: 99%

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Parametrization of Kβ′′ and Kβ2,5 X-ray contributions in Kβ spectra of 3d transition metal compounds

Fazinić

Mandić

Kavčič

et al. 2011

J. Anal. At. Spectrom.

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Large database of high resolution Kb X-ray emission spectra of selected 3d metal (Ti, V, Cr, Mn) compounds obtained after excitation by 2 and 3 MeV proton beams have been built. Analysis of (relative) positions and intensities of Kb 00 and Kb 2,5 X-ray contributions as a function of chemical and structural properties of analyzed 3d metal compounds have been performed. Two independent experiments employing wavelength dispersive spectrometers with different experimental resolutions (8.1 eV versus 2.8 eV for the case of Cr Kb 1,3 line FWHM) were performed in order to exclude any possible effect of the experimental resolution on the extracted values. A simple parametrization of Kb 00 and Kb 2,5 X-rays' relative positions and intensities over the range of 3d metal compounds with various oxidation states, a wide range of metal-ligand bond lengths, and selected 3d metals, was performed. Results of our parametrization were compared critically with other experimental and theoretical values available in the literature. The parametrization obtained in this work could be used for chemical and structural speciation of 3d metal compounds and for improved interpretation of K X-ray spectra of 3d transition metal compounds measured by solid state detectors.

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Section: Relative Intensitiesmentioning

confidence: 99%

“…Fig.3Relationship between the DE(Kb 2,5 À Kb 00 ) and the ligand (C, N, O, F) atomic number. The data from our database are presented as >, while all the other data found in the literature are shown as circles 9,[35][36][37]44,45,[47][48][49][50][51]53,[55][56][57][58][59][60][61][62][63][64][65][66]. …”

mentioning

confidence: 99%

Parametrization of Kβ′′ and Kβ2,5 X-ray contributions in Kβ spectra of 3d transition metal compounds

Fazinić

Mandić

Kavčič

et al. 2011

J. Anal. At. Spectrom.

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Polarized OKα Valence Band Spectra of TiO₂ (Rutile)

Dräger

Werfel

Brümmer

1982

Physica Status Solidi (b)

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BYTo complete the X-ray spectroscopic investigations of the electronic structure of TiOZ (rutile) by means of polarized TiKp valence band spectra /1/ the corresponding OK~L spectra were also measured. The OKac spectra were measured with the RAP spectrometer of an electron microprobe analyzer ARL EMX-SM on the same synthetic rutile single crystal as used in /1/ but with an emitting surface cut parallel to the tetragonal c-axis and covered by a thin vapour deposited carbon film. The spectra have been registered for two special positions of the emission sample relative to the X-ray spectrometer (see Fig. 5 of /2/).With the tetragonal c-axis of the Ti02 sample perpendicular and parallel to the reflection plane of the spectrometer crystal two spectra with the intensities 11( 0 ) and 12( 0 ) were obtained, respectively. Then from these spectra the intensities I,, ( W ) and II ( o) were calculated by means of formulas (7) and (8) in /2/. The latter intensities represent the spectra with the polarization vector 2! of radiation parallel and perpendicular, respectively, to the c-axis of the emitting sample. In formulas (7) and (8) of /2/ a polarization ratio cos2 2 8 /1, 2/of the RAP spectrometer crystalwas used withan average Bragg angle 8 = = 64.5O at which the OK= valence band spectra a r e reflected. The resulting polarized OKor spectra of Ti02 (rutile) show different peak intensities and peak positions, the latter are separated by about 0 . 6 eV. In Fig. 1 these spectra and the polarized TiKp2. valence band spectra /1/ a r e combined on a binding energy scale by means of XPS core level energies of rutile measured in a Hewlett-Packard 5950 A spectrometer with monochromatized A l K a radiation.Most peaks and shoulders in the O K a spectra coincide with corresponding structures in the TiKp 2 . 5 spectrum with respect to the binding ecergy. This indicates the existence of bonding valence states with participation of 0 2p and T i 4p like orbitals which a r e in particular the cluster orbitals 2B3u, 2Blu, 1 ) Friedemann-Bach-Platz 6, DDR-4020 Halle (Saale), GDR.

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Polarized ZnK‐ and OK‐Emission Bands of ZnO

Dräger¹,

Wippermann²,

Brümmer³

et al. 1983

Physica Status Solidi (b)

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Short Notes K113 phys. stat. sol. (b) 118, -K113 (1983) Subject classification: 13.1 and 2 4 22.4 Sektion Physik d e r Martin-Luther-Universitat, Halle-Wittenberg' ) (a) and Institute of Physics, Czechoslovak Academy of Sciences, Prague2) (b) Polarized ZnK-and OK-Emission Bands of ZnO BY G. DR%ER(a), R. W I P P E R M A " (a), 0. BRUMMER (a), and A. 8IMfiNEK (b) In recent y e a r s several oxides with anisotropic arrangement of atoms were found t o show a polarization effect of their X-ray emission bands /1, 2/. In this note we present calculations and measurements of the polarized ZnK-and OK-emission bands of ZnO.The hexagonal lattice of ZnO has the ratio c / a = 1.602; for the relative coordinate u of the oxygen atom in the unit cell t h e r e are two data in the literature: Wyckoff's /3/ 9 = 0.345 and Abrahams and Bernstein's /4/ 3 = 0.383.Since these data differ considerably and differ also from the isotropic values c/a = 1.633, u = 0.375 we calculated the polarized K-emission bands for both

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Polarized TiKβ Valence Band Spectra of TiO₂ (Rutile)

Cited by 9 publications

References 10 publications

Parametrization of Kβ′′ and Kβ2,5 X-ray contributions in Kβ spectra of 3d transition metal compounds

Parametrization of Kβ′′ and Kβ2,5 X-ray contributions in Kβ spectra of 3d transition metal compounds

Polarized OKα Valence Band Spectra of TiO₂ (Rutile)

Polarized ZnK‐ and OK‐Emission Bands of ZnO

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Polarized TiKβ Valence Band Spectra of TiO2 (Rutile)

Cited by 9 publications

References 10 publications

Parametrization of Kβ′′ and Kβ2,5 X-ray contributions in Kβ spectra of 3d transition metal compounds

Parametrization of Kβ′′ and Kβ2,5 X-ray contributions in Kβ spectra of 3d transition metal compounds

Polarized OKα Valence Band Spectra of TiO2 (Rutile)

Polarized ZnK‐ and OK‐Emission Bands of ZnO

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Product

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Polarized TiKβ Valence Band Spectra of TiO₂ (Rutile)

Polarized OKα Valence Band Spectra of TiO₂ (Rutile)