ESCA investigations of ion beam effects on surfaces

Storp, S.; Holm, Ragnar

doi:10.1016/0368-2048(79)85017-3

Cited by 68 publications

(18 citation statements)

References 18 publications

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“…Similar reduction of oxides by ion bombardment has been already reported. 17,19,20 The chemical changes of cobalt observed for this sample by ESCA should also induce different patterns in the SIMS spectra due to different sputter yields of various ionic states of Co. The SIMS analysis for Crdoped COO containing 0.9 at% Cr confirmed this assumption.…”

Section: Polycrystalline Coo-cr203 Solid Solutionsmentioning

confidence: 72%

Segregation of chromium in CoOCr₂O₃ solid solutions and CoCr₂O₄ spinel phases studied by SIMS and ESCA

Sikora

Stolze

Hirschwald

1987

Surface & Interface Analysis

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Section: Polycrystalline Coo-cr203 Solid Solutionsmentioning

confidence: 72%

Segregation of chromium in CoOCr₂O₃ solid solutions and CoCr₂O₄ spinel phases studied by SIMS and ESCA

Sikora

Stolze

Hirschwald

1987

Surface & Interface Analysis

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“…Polystyrene, which is a notoriously sensitive polymer in this respect, has been shown to lose its aromatic features as reflected in the TC-TC* shake-up satellite, after doses of lo', 5 keV Ar+ ions per c m 2 . 24 In another study of the same polymer, a dose of 1.6 x lo', 4 keV Ar+ per cm2 was reported to have the same effect.6 In a study of PMMA a dose of lo', 2 keV Ari per cm2 was shown by XPS to sputter the carbonyl functionality preferen ti all^.^^ It can be argued that SIMS should be more sensitive to early stages of ion beam damage than XPS, since this damage will affect the outermost layers first. SIMS is more surface-sensitive and will detect small structural changes that XPS cannot pick up.…”

Section: Beam Damage Effectsmentioning

confidence: 99%

Interpretation of the fragmentation patterns in static SIMS analysis of polymers. Part I. Simple aliphatic hydrocarbons

Ooij

Brinkhuis

1988

Surface & Interface Analysis

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A number of simple aliphatic hydrocarbon polymers have been studied by static SIMS. The low-mass positive spectra reflect structural dflerences in the polymeric structure, which result in characteristic fingerprint spectra. Unsaturation and differences in branching lead to very distinct spectral features which show promise for the application of SIMS as an analytical technique in polymer-related areas. An attempt is made to interpret the spectra in terms of molecular structure, fragmentation mechanisms and ion stabilities. The chemical nature of ion beam damage in PE and PP was studied to some extent.

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“…7,8 Ion bombardment is a widely used means to fabricate, 9 modify, 10 clean, and analyze nanostructures. [14][15][16][17] All of these transformations will affect both the chemical and physical properties of the nanostructures, independently or collectively. [14][15][16][17] All of these transformations will affect both the chemical and physical properties of the nanostructures, independently or collectively.…”

Section: Introductionmentioning

confidence: 99%

Ion induced modification of size-selected MoO3 and WO3 clusters deposited on HOPG

Li¹,

Wepasnick²,

Tang³

et al. 2012

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Design and capabilities of an experimental setup based on magnetron sputtering for formation and deposition of size-selected metal clusters on ultra-clean surfaces Rev. Sci. Instrum. 83, 073304 (2012); 10.1063/1.4732821 The effect of graphite surface condition on the composition of Al 2 O 3 by atomic layer deposition Appl. Phys. Lett. 97, 082901 (2010); 10.1063/1.3479908 Metastable ordered arrays of size-selected Ag clusters on graphite Appl. Phys. Lett. 82, 2595 (2003); 10.1063/1.1568165 Characterization of size-selected metal clusters implanted below the surface of graphiteThe effect of 4 keV Ar þ ions on size-selected (MoO 3 ) n and (WO 3 ) n clusters, where n ¼ 30 6 1, deposited on highly ordered pyrolytic graphite was studied by x-ray photoelectron spectroscopy and atomic force microscopy. During deposition, both metal oxide clusters collected preferentially at step edges at low coverages, with larger cluster aggregates nucleating on the terraces at higher coverages. Under the influence of 4 keV Ar þ ion bombardment, both clusters initially experienced oxygen loss and corresponding reduction of the transition metal before the remaining species were sputtered from the surface. However, MoO 3 was only partially reduced to MoO 2 , while WO 3 was fully reduced to metallic tungsten. As a consequence of these variations in ion induced chemistry, changes in the surface morphology of MoO 3 and WO 3 following prolonged Ar þ exposure differed significantly. For (MoO 3 ) 3061 , the size of the clusters decreased, due to removal of MoO 2 fragments. In contrast, for (WO 3 ) 3061 , the formation of smaller sized clusters was also accompanied by the appearance of clusters that were much larger in size than the original "as deposited" clusters. The creation of these larger structures is ascribed to the mobility and coalescence of metallic tungsten species produced during the sputtering process. The contrast in the behavior of the molybdenum and tungsten oxide clusters illustrates the interplay that can exist between ion induced changes in speciation and morphology of deposited clusters.

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ESCA investigations of ion beam effects on surfaces

Cited by 68 publications

References 18 publications

Segregation of chromium in CoOCr₂O₃ solid solutions and CoCr₂O₄ spinel phases studied by SIMS and ESCA

Segregation of chromium in CoOCr₂O₃ solid solutions and CoCr₂O₄ spinel phases studied by SIMS and ESCA

Interpretation of the fragmentation patterns in static SIMS analysis of polymers. Part I. Simple aliphatic hydrocarbons

Ion induced modification of size-selected MoO3 and WO3 clusters deposited on HOPG

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ESCA investigations of ion beam effects on surfaces

Cited by 68 publications

References 18 publications

Segregation of chromium in CoOCr2O3 solid solutions and CoCr2O4 spinel phases studied by SIMS and ESCA

Segregation of chromium in CoOCr2O3 solid solutions and CoCr2O4 spinel phases studied by SIMS and ESCA

Interpretation of the fragmentation patterns in static SIMS analysis of polymers. Part I. Simple aliphatic hydrocarbons

Ion induced modification of size-selected MoO3 and WO3 clusters deposited on HOPG

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Segregation of chromium in CoOCr₂O₃ solid solutions and CoCr₂O₄ spinel phases studied by SIMS and ESCA

Segregation of chromium in CoOCr₂O₃ solid solutions and CoCr₂O₄ spinel phases studied by SIMS and ESCA