Adsorption and reaction on oxide surfaces: NO, NO2 on Cr2O3(111)/Cr(110)

Xu, Chen; Haßel, M.; Kuhlenbeck, Helmut; Freund, Hans‐Joachim

doi:10.1016/0039-6028(91)90897-2

Cited by 132 publications

(58 citation statements)

References 28 publications

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“…The presence of Cr 2+ in ferromagnetic Zn(Cr)Te/(Cr)Te phase was noticed at its corresponding binding energy 574 eV [20,21]. In addition, the peak at 576 and 573.7 eV indicates the presence of Cr 2 O 3 and Cr, respectively [21,22]. This shows the presence of secondary phases such as Cr and Cr 2 O 3 which are antiferromagnetic in nature [23,24].…”

Section: Xps Analysismentioning

confidence: 94%

“…The spectra correspond to ZnTe:Cr film was deconvoluted since the core level binding energy of Cr and Te are close to each other. The presence of Cr 2+ in ferromagnetic Zn(Cr)Te/(Cr)Te phase was noticed at its corresponding binding energy 574 eV [20,21]. In addition, the peak at 576 and 573.7 eV indicates the presence of Cr 2 O 3 and Cr, respectively [21,22].…”

Section: Xps Analysismentioning

confidence: 97%

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Ferromagnetism in ZnTe:Cr film grown on Si(1 0 0)

Soundararajan

Peranantham

Mangalaraj

et al. 2011

Journal of Alloys and Compounds

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Section: Xps Analysismentioning

confidence: 94%

Section: Xps Analysismentioning

confidence: 97%

Ferromagnetism in ZnTe:Cr film grown on Si(1 0 0)

Soundararajan

Peranantham

Mangalaraj

et al. 2011

Journal of Alloys and Compounds

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“…Figures 3 and 4 show the high-resolution Cr 2p spin orbit doublet spectra for the analyzed slag compositions. The Cr2p3/2 binding energies have been reported to be 574.2 eV for Cr metal, 576.0 for Cr(II), 577.0 for Cr(III) in Cr 2 O 3 (111)/Cr(110), [19,20] or 577.2 for Cr(III) in Cr 2 O 3 /NiAl 2 O 4 . [21] For the samples in which wt pct MgO = 3 and 5, the Cr2p3/2 peak is broad with a maximum at~576 eV corresponding to the contribution from Cr 3+ and a shoulder at~574 eV due to electrons from the Cr 2+ ions in the samples.…”

Section: A Chromium Spectramentioning

confidence: 97%

Effects of MgO and Al2O3 Addition on Redox State of Chromium in CaO-SiO2-CrO x Slag System by XPS Method

Wang

Chou

et al. 2015

Metall Mater Trans B

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The effects of MgO and Al 2 O 3 on the redox state of chromium in CaO-SiO 2 -CrO x system have been investigated at 1873 K (1600°C) under Ar-CO-CO 2 atmosphere and analyzed by means of X-ray photoelectron spectroscopy. From the analysis of the Cr 2p core level spectra, it was found that both Cr(II) and Cr(III) exist simultaneously in CaO-MgO/Al 2 O 3 -SiO 2 -CrO x , and the quantitative ratio Cr(II)/Cr(III) has been obtained by deducing from the area under the computer-resolved peaks. Substitutions of CaO by MgO, SiO 2 by Al 2 O 3 favored the Cr(II) state existing in the system in the composition ranges of 3 to 10 wt pct MgO and 5 to 20 pct Al 2 O 3 . Meanwhile, from the analysis of the O1s spectra in CaO-MgO-SiO 2 -CrO x , it was found that the ratio of the non-bridging oxygen content increased first due to the CrO contribution to the electron distribution uniformly as O À at MgO low content. Afterward, it went to decreasing with continuing addition of MgO because ionic contribution of MgO is less than that of CaO and the influence of the CrO clustering on the non-Bridging oxygen is limited due to only 5 wt pct CrO x . In CaO-Al 2 O 3 -SiO 2 -CrO x system, Cr(II) acts as a network modifier to compensate Al 3+ charge balance to make the structure stable, so the non-bridge oxygen in this system continues decreasing.

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“…Previous studies of chromium oxide surfaces involved oxidation of low index Cr single-crystals [14][15][16][17][18][19][20][21][22][23][24][25][26][27]; surfaces of a-Cr 2 O 3 (0001) bulk crystals [28,29]; and oxidation of ultra thin films of chromium oxide grown on such transition and noble metal substrates as Pt(111) [30], Ag(111) [31], Cu(111) [32], Cu(100) [33] and Cu(110) [34] as well as on alumina [35] and W(100) [36]. Of these, only a few [15,16,28,29,31] involved quantitative surface structure determinations.…”

Section: Introductionmentioning

confidence: 99%