X-ray photoelectron spectroscopy and magnetic properties in Fe–SiO2 granular films

Honda, Shinya; Shimizu, Takeshi; Une, T.; Sakamoto, M.; Kawabata, Ken‐ichi; Tanaka, Takeshi

doi:10.1063/1.1605818

Cited by 15 publications

(5 citation statements)

References 11 publications

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“…The decreases in Si bond energy due to the addition of metal ions are in good agreement with the results of Johnson et al, 28 Schneeweiss et al 29 and Honda and Shimizu. 30 So it can be concluded that the silica reticular formation and metal oxide were not simply mixed together but in the form of a new chemical bond which could improve the anticorrosion performance of the film.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion

Chen

et al. 2010

Corrosion Engineering, Science and Technology

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A Fe/Cr doped SiO 2 thin film which can improve the anticorrosion characteristic of materials was prepared on SUS304 stainless steel substrates by a modified hydrothermal method which constitutes two parts of preparation process. The corrosion of stainless steel stimulated by aqueous Lithium bromide solution and the dissolution of silica from Na-Ca glass simultaneously. And then a Fe/Cr doped SiO 2 thin film is coated onto the substrate. The Fe/Cr doped SiO 2 film was characterised by scanning electronic micrographs, X-ray diffraction, X-ray photoelectron spectroscopy and Electron probe X-ray microanalyser. Results showed that the corrosion products M Xz , M(OH) xz (M: metal) and the silica reticular are combined to form a Fe/Cr doped SiO 2 thin film. Furthermore, a chemical bond formed between silicon reticular and metal ions to improve the compactness and the adhesive property of the film. The anticorrosion characteristics of the film were measured by the methods of weight loss and electrochemical potentiodynamic polarisation, indicating that the Fe/Cr doped SiO 2 thin film can improve the anticorrosion performance of stainless steels effectively.

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Section: Resultsmentioning

confidence: 99%

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion

Chen

et al. 2010

Corrosion Engineering, Science and Technology

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“…In order to characterize the effect of the Al-UL on the composition of Fe 3 O 4 /Al bilayer, XPS measurement for samples A 0 and A 3 was performed on Fe 2p using Mg K α radiation (1256.3 eV) and the results are shown in figure 2. The features of Fe 2p XPS spectrum in distinguishing the phases of iron oxides are [7][8][9] that (1) the satellite peak at 719 eV appears in the Fe 2p spectrum of γ -Fe 2 O 3 and (2) an obvious shoulder occurs at 709 eV in the Fe 2p spectrum of Fe 3 O 4 . From figure 2, one can see that the Fe 2p 1/2 and 2p 3/2 peaks were broadened due to the existence of peaks situated at around 711 and 724 eV from the Fe 2+ ions.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of magnetization in sputtered polycrystalline Fe₃O₄/Al bilayers

Shen¹,

Mi²,

Li³

et al. 2006

J. Phys. D: Appl. Phys.

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Polycrystalline Fe3O4/Al bilayers with Al underlayers (ULs) of different thicknesses were fabricated using facing-target reactive sputtering. Structure analyses revealed that Al ULs improve the crystallinity and reduce the thickness of the Fe3O4 amorphous initial layer. Room-temperature magnetization of the Fe3O4 films with 30 nm thick Al ULs is ∼450 emu cm−3 at 50 kOe fields, which is much larger than that of the polycrystalline Fe3O4 monolayer deposited under the same conditions. The field-cooled hysteresis loop of Fe3O4 films on the 30 nm thick Al layer shows a 50 Oe exchange bias field at 5 K, much smaller than 256 Oe detected in polycrystalline Fe3O4 monolayer and the exchange bias fields in the samples with and without 30 nm Al UL decrease with the increasing temperature. The enhancement of the magnetization and the sharp decrease in the exchange bias field observed in the Fe3O4 films with Al ULs can be attributed to the decoupling of the antiferromagnetic domains and the thickness reduction of the amorphous Fe–O layers between the polycrystalline Fe3O4 films and the Al ULs.

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“…The decrease in the Si bond energy due to the addition of metal ions is in good agreement with the results of Johnson, 28 Schneeweiss 29 and Hondaa. 30 Therefore, it can be concluded that the silica network formation and the metal oxide were not simply mixed together but were, in fact, bound, thus improving the anticorrosion performance of the film.…”

Section: Characterisationsmentioning

confidence: 99%

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion

Chen¹,

Ma²,

Bo³

et al. 2011

Corrosion Engineering, Science and Technology

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A Fe/Cr doped SiO 2 thin film which can improve the anticorrosion characteristic of materials was prepared on SUS304 stainless steel substrates by a modified hydrothermal method that constitutes a two part preparation process. The corrosion of stainless steel and the dissolution of silica from Na-Ca glass are simultaneously stimulated by an aqueous lithium bromide solution, and then a Fe/Cr doped SiO 2 thin film is coated onto the substrate. The Fe/Cr doped SiO 2 film was characterised by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and electron probe X-ray microanalyser. The results showed that the corrosion products and the silica are combined to form a Fe/Cr doped SiO 2 thin film. Furthermore, a chemical bond is formed between the silicon coating and the metal that improves the compactness and the adhesive property of the film. The anticorrosion characteristics of the film were measured by the methods of weight loss and electrochemical potentiodynamic polarisation, indicating that the Fe/ Cr doped SiO 2 thin film can improve the anticorrosion performance of stainless steels effectively.

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X-ray photoelectron spectroscopy and magnetic properties in Fe–SiO2 granular films

Abstract: Structure and magnetic properties of NiFe/SiO 2 and Co/SiO 2 nanocomposites consolidated by detonation compaction

Cited by 15 publications

References 11 publications

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion

Enhancement of magnetization in sputtered polycrystalline Fe₃O₄/Al bilayers

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion

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X-ray photoelectron spectroscopy and magnetic properties in Fe–SiO2 granular films

Abstract: Structure and magnetic properties of NiFe/SiO 2 and Co/SiO 2 nanocomposites consolidated by detonation compaction

Cited by 15 publications

References 11 publications

Preparation of Fe/Cr doped SiO2thin film on 304 stainless steel substrate originated from corrosion

Preparation of Fe/Cr doped SiO2thin film on 304 stainless steel substrate originated from corrosion

Enhancement of magnetization in sputtered polycrystalline Fe3O4/Al bilayers

Preparation of Fe/Cr doped SiO2thin film on 304 stainless steel substrate originated from corrosion

Contact Info

Product

Resources

About

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion

Enhancement of magnetization in sputtered polycrystalline Fe₃O₄/Al bilayers

Preparation of Fe/Cr doped SiO₂thin film on 304 stainless steel substrate originated from corrosion