The evolution of Ni nanoislands on the rutile TiO2(110) surface with coverage, heating and oxygen treatment

Tanner, R.E.; Goldfarb, I.; Castell, Martin R.; Briggs, G. A. D.

doi:10.1016/s0039-6028(01)01032-9

Cited by 55 publications

(53 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7,8 Careful analysis of the RHEED patterns reveals the epitaxial relation with the substrate to be ͓001͔ In ʈ ͓011͔ GaAs , where ͓100͔ In ʈ ͓100͔ GaAs is the high symmetry direction of In. The additional diffraction features might be attributed to twin planes in the islands, 9 surface scattering, 10 finite size effects, 11 or even electron refraction. 12 The deduced epitaxial relation is confirmed by the AFM image presented in Fig.…”

Section: Methodsmentioning

confidence: 99%

In islands and their conversion to InAs quantum dots on GaAs (100): Structural and optical properties

Urbanczyk

Hamhuis

Nötzel

2010

Journal of Applied Physics

View full text Add to dashboard Cite

We report growth of crystalline In islands on GaAs ͑100͒ by molecular beam epitaxy at low temperatures. The islands have a pyramidlike shape with well defined facets and epitaxial relation with the substrate. They are of nanoscale dimensions with high density. Above a certain substrate temperature, associated with the melting point of In, noncrystalline round shaped islands form with larger size and lower density. Upon conversion of the In islands into InAs islands under As flux, the final shape does not depend on the original crystalline state but on the annealing temperature of the InAs islands. Clear photoluminescence is observed from InAs quantum dots after conversion of the crystalline In islands.

show abstract

Section: Methodsmentioning

confidence: 99%

In islands and their conversion to InAs quantum dots on GaAs (100): Structural and optical properties

Urbanczyk

Hamhuis

Nötzel

2010

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…In addition, there has been considerable interest in using metals on oxides for applications in heterogeneous catalysis where the size distribution, shape and wetting properties of the metal overlayer are important. Most of the research in this area has largely proceeded in terms of monolayer and submonolayer deposition under ultra high vacuum (UHV) conditions, with particular emphasis on the electronic surface chemistry involved [4]. Metal-on-oxide deposition is now emerging in the field of large-area electronic applications that do not require UHV conditions and where it is important to know what is the most likely surface topology to be produced.…”

Section: Introductionmentioning

confidence: 99%

“…This method is also able to produce such surfaces over large areas and, ideally, at low temperatures. Temperature considerations are important, since it is well known that heating deactivates many metal-on-oxide catalysts; surface reduction occurring after annealing under UHV conditions above 725 K has been reported [4].…”

Section: Introductionmentioning

confidence: 99%

Formation of low-temperature self-organized nanoscale nickel metal islands

Carey¹,

Ong²,

Silva³

2003

Nanotechnology

View full text Add to dashboard Cite

The growth and evolution of nanometre-sized Ni metal islands deposited under low-temperature non-ultra high vacuum conditions as a function of metal layer thickness, growth temperature and time is reported. The temperature of formation of the islands has been intentionally kept low for possible applications in flat panel display technology and also to act as a catalyst for carbon nanotube growth. It is shown that the size and distribution of the islands depends critically on the annealing temperature and the initial thickness of the metal layer. The mechanism of formation of the islands is described in terms of an Ostwald ripening mechanism of mass transport of either weakly bound individual Ni atoms or smaller clusters into larger more dispersed clusters.

show abstract

“…The Ni trimer at the step site of TiO 2 (110) was just in this range and was stabilized by the interaction with the step edge. The trimer was the nucleus for further cluster growth at the step, as was observed by STM in previous studies [33,50,51]. We are performing the DFT calculation to confirm the Ni trimer structure at the step.…”

Section: X-ray Absorption Near Edge Structure (Xanes) Spectra Of Ni Smentioning

confidence: 56%

“…0.02 ML) [31]. It should be mentioned that Chen and Tanner [33,50,51] also reported the selective nucleation of Ni and Cu clusters at the step sites of the TiO 2 (110).…”

Section: X-ray Absorption Near Edge Structure (Xanes) Spectra Of Ni Smentioning

confidence: 93%

Anisotropic growth of a nickel trimer formed on a highly-stepped TiO2(110) surface

Uehara

Hanaffi

Koike

et al. 2013

Chemical Physics Letters

View full text Add to dashboard Cite

The structures of Ni clusters formed on a highly-stepped TiO 2 (110) surface were studied by polarization-dependent total reflection fluorescence X-ray absorption fine structure analysis. When 0.8 monolayers of Ni were deposited, three-dimensional Ni clusters with 1-2 nm diameters and heights less than 1 nm were formed. Conversely, when 0.07 monolayers of Ni were deposited, an anisotropic Ni trimer with a Ni-Ni distance of 0.260 nm was created at the [001] step. We revealed that the surface modification to enhance the metal-anion interaction can control the deposited metal structure.

show abstract

The evolution of Ni nanoislands on the rutile TiO2(110) surface with coverage, heating and oxygen treatment

Cited by 55 publications

References 61 publications

In islands and their conversion to InAs quantum dots on GaAs (100): Structural and optical properties

In islands and their conversion to InAs quantum dots on GaAs (100): Structural and optical properties

Formation of low-temperature self-organized nanoscale nickel metal islands

Anisotropic growth of a nickel trimer formed on a highly-stepped TiO2(110) surface

Contact Info

Product

Resources

About