A multipurpose UHV manipulator for surface studies

Pritchard, F; Wood, S. E.; Marr, G. V.; Player, M.A.

doi:10.1088/0953-8984/1/sb/053

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…In order to mount the assembly of substrate holder and temperature controller, the geometry of system was almost restricted by the size of the bell jar, the position of the crucible and the flange permitting access into the vacuum chamber (figure 1). The substrate holder and its accessories are described in [20].…”

Section: Methodsmentioning

confidence: 99%

Influence of deposition rate and time on nucleation of Er on a-C

Savaloni¹,

Shahrestani²,

Player³

1997

Nanotechnology

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Nucleation kinetics of UHV deposited erbium on amorphous carbon at room temperature and for atom arrival rates of 1.5 × 10 13 -1.8 × 10 14 atoms/cm 2 s is studied. For all deposition rates, the density of nuclei increased with time to a saturation value and remained stationary. It was found that the nucleation rate is linearly dependent on the deposition rate, indicating that a single-adatom constitutes a stable nucleus. At lower deposition rates (up to R = 1 × 10 14 atom/cm 2 s), the saturation density is constant and independent of R but at higher rates it increases with R according to the mathematical function n s = a + b exp(R/c). It is shown that the nucleation theory usually used to explain the experimental work needs some revision. For measured condensation coefficients, the diffusion length of adatoms x s = (1.53 ± 0.01) nm, and the difference between adsorption and surface diffusion energies, E a − E sd = (0.12 ± 0.01) eV are estimated.

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Section: Methodsmentioning

confidence: 99%