Growth of cobalt on a VO(111) surface: Template, surfactant or encapsulant role of the oxide nanolayer?

Parteder, G.; Allegretti, Francesco; Surnev, S.; Netzer, H.

doi:10.1016/j.susc.2008.06.021

Cited by 15 publications

(28 citation statements)

References 34 publications

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“…18 A strong adhesion energy between the metal NPs and the support was found to be on the basis of both the diffusion and encapsulation processes. Similar results were reported for other systems, like Co/VO x 19 and…”

Section: Introductionsupporting

confidence: 91%

“…19 The authors concluded that the balance of surface free energies drives the system towards the encapsulation of the metal overlayer by VO x . 19 The authors concluded that the balance of surface free energies drives the system towards the encapsulation of the metal overlayer by VO x .…”

Section: Discussionmentioning

confidence: 99%

“…A study of the deposition of Co on VO x /Rh(111) showed that the metal diffuses underneath the oxide film already at RT. 19 The authors concluded that the balance of surface free energies drives the system towards the encapsulation of the metal overlayer by VO x . The metal diffusion is favored because surface free energies of oxides are generally lower than those of metals.…”

Section: Discussionmentioning

confidence: 99%

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Interaction of iron with a wagon wheel-like ultrathin TiO_x film grown on Pt(111)

Artiglia

Cavaliere

Gavioli

et al. 2015

Phys. Chem. Chem. Phys.

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The structure and thermal evolution of Fe nanoparticles deposited on a wetting TiOx ultrathin film epitaxially grown on Pt(111) has been characterized by various surface science techniques. Combining the results obtained it is shown that, at room temperature, metallic Fe nucleates randomly and oxidizes at the interface. A thermal treatment causes Fe migration through the TiOx layer, forming a mixed oxide and a new hexagonal ultrathin film phase. Finally, the pristine TiOx phase motif is restored, due to the complete diffusion of Fe into the Pt substrate.

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Section: Introductionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Interaction of iron with a wagon wheel-like ultrathin TiO_x film grown on Pt(111)

Artiglia

Cavaliere

Gavioli

et al. 2015

Phys. Chem. Chem. Phys.

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“…This mechanism has been invoked to explain the behavior of more reactive metals deposited on oxide ultrathin films, i.e. Fe on TiO x /Pt(111) 36 and Co on VO x /Rh(111), 37 where the higher reactivity of the adsorbed metals gives rise to a competition for the oxygen atoms with the metal of the oxide film (Ti, V). According to existing STM and photoemission data, the ultrathin films is either restructured 36 or displaced 37 and the deposited metal goes directly in contact to the interface with the substrate.…”

Section: Discussionmentioning

confidence: 99%

Au nanoparticles on a templating TiOx/Pt(111) ultrathin polar film: a photoemission and photoelectron diffraction study

Rizzi

Sedona

Artiglia

et al. 2009

Phys. Chem. Chem. Phys.

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We present an in-depth investigation of Au nanoparticles self-assembled on a zigzag-like TiO(x)/Pt(111) ultrathin polar film, whose structure is known in great detail. The peculiar pattern of defects (picoholes) templates a linear array of size-selected (ca. 1 nm) Au nanoparticles without disruption of the titania layer, as observed by scanning tunneling microscopy. Their structure and electronic properties have been investigated by several large-area spectroscopic tools, i.e. high-resolution core and valence level photoemission and angle-scanned and energy-scanned photoelectron diffraction. The comparison between experimental data and density functional theoretical calculations indicates that the Au atoms landing on the oxide film are rather mobile, and that the picoholes can act as effective trapping and nucleation centers for the growth of the Au nanoparticles. All the experimental results are in concord in indicating that the Au NPs are flat islands with a maximum thickness of 2-3 layers exposing the (111) surface.

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“…We have recently investigated by STM and XPS the growth of Co overlayers on a VO͑111͒ bilayer supported on a Rh͑111͒ surface. 144 The structure of the VO͑111͒ layer has been already described in Sec. III B 2 and is identical to that of FeO͑111͒ films on Pt͑111͒, thus a similar wetting behavior can be expected for this metal-on-oxide system.…”

Section: B Encapsulation Of Metals By Oxide Nanolayersmentioning

confidence: 99%

Low-dimensional oxide nanostructures on metals: Hybrid systems with novel properties

Netzer¹,

Allegretti²,

Surnev³

2010

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

100

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Oxide nanostructures in low dimensions on well-defined metal surfaces form novel hybrid systems with tremendous potential and impact in fundamental research and for the emerging nanotechnologies. In contrast to bulk materials low-dimensional oxide nanostructures not only involve a large number of undercoordinated atoms but their interaction with the metal substrate also provides constraints on their structure and morphology and often yields elastic strain and/or uncompensated charge. These factors modify significantly the physical and chemical properties of the nanophases as compared to bulk oxides. In this review the authors will examine critically the available data with respect to structure-property relationships of metal-supported oxide nanostructures in reduced dimensions. The connection between structure, elastic strain, and charge transfer on the one hand, and electronic and magnetic behavior on the other one, will be discussed. The novel chemical properties of the oxide-metal nanostructure systems will provide another focus of this review.

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Growth of cobalt on a VO(111) surface: Template, surfactant or encapsulant role of the oxide nanolayer?

Cited by 15 publications

References 34 publications

Interaction of iron with a wagon wheel-like ultrathin TiO_x film grown on Pt(111)

Interaction of iron with a wagon wheel-like ultrathin TiO_x film grown on Pt(111)

Au nanoparticles on a templating TiOx/Pt(111) ultrathin polar film: a photoemission and photoelectron diffraction study

Low-dimensional oxide nanostructures on metals: Hybrid systems with novel properties

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Growth of cobalt on a VO(111) surface: Template, surfactant or encapsulant role of the oxide nanolayer?

Cited by 15 publications

References 34 publications

Interaction of iron with a wagon wheel-like ultrathin TiOx film grown on Pt(111)

Interaction of iron with a wagon wheel-like ultrathin TiOx film grown on Pt(111)

Au nanoparticles on a templating TiOx/Pt(111) ultrathin polar film: a photoemission and photoelectron diffraction study

Low-dimensional oxide nanostructures on metals: Hybrid systems with novel properties

Contact Info

Product

Resources

About

Interaction of iron with a wagon wheel-like ultrathin TiO_x film grown on Pt(111)

Interaction of iron with a wagon wheel-like ultrathin TiO_x film grown on Pt(111)