Morphologies, metastability, and coarsening of quantum nanoislands on the surfaces of the annealed Ag(110) and Pb(111) thin films

Price, Donald L.; Henner, V. K.; Khenner, Mikhail

doi:10.1063/1.5052641

Cited by 2 publications

(6 citation statements)

References 68 publications

(193 reference statements)

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“…where A is the surface absorbance, FL is the laser fluence, Ft is the laser fluence threshold representing the minimum energy which desired vaporization occurs, and Lv is the latent heat per unit mass. [30][31][32][33][34][35] Two dominant mechanisms, inverse Bremsstrahlung, and potentization, are involved in the plasma plume when nanosecond pulsed laser used to irradiate the target 9 material. Because there is enough time for the thermal wave to penetrate into the material, which causes the melting and evaporation process.…”

Section: Laser-target Interactionmentioning

confidence: 99%

“…where m is the mass of the particles, k is the Boltzmann constant, v is the speed along the propagation direction, u is the stream velocity, T is the stream speed, which describes the angular distribution of the propagation, and n is an integer typically 3-4 [30][31][32][33][34][35].…”

Section: Plume Expansion In a Vacuummentioning

confidence: 99%

“…A surface diffusion equation-based model was recently used to compute the coarsening of quantum nanoislands [30]. In that paper, it is shown that the 10 ML and 14 ML islands, as well as the islands of other ``magic" heights, form by a 3D-to-2D transition from the round-top Stranski-Krastanow islands.…”

Section: A B Cmentioning

confidence: 99%

“…If the kinetic energy of the adatoms is not enough for the surface diffusion substrate can be heated up from outside to increase the energy of the particle with heat energy. [30][31][32][33][34][35] There are three types of film growth modes, which are presented in figure 4;…”

mentioning

confidence: 99%

“…[30][31][32][33][34][35] 2.6. Thin film growth Thin film growth is not a trivial process and depends on a number of factors, including density, energy, ionization degree, target material, substrate, pressure, temperature, and other environmental conditions.…”

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Morphology and structure of Pb thin films grown on Si(111) by pulsed laser deposition

et al. 2020

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Pulsed laser deposition (PLD) is a versatile thin film deposition technique in which high powered laser beam interacts with a target material inside an ultrahigh vacuum chamber. Highly energetic particles such as electrons, atoms, protons, and ions generate a plasma plume that directed towards a substrate material where recondenses form a thin film. PLD is an effective and reliable method to create varieties of thin films such as metal, polymer, and ceramic for many technologically essential applications. In this study, thin Pb films were grown by pulsed laser deposition on Si (111) at various laser fluences, pulse wavelengths, deposition times, and substrate temperatures. Nanosecond pulsed Nd: YAG laser with 1064 nm fundamental wavelength, 10 Hz frequency, and 5 ns pulse duration used to ablate the 99.99% pure Pb material. Scanning electron microscopy (SEM) and ex situ atomic force microscopy (AFM) were used to probe the surface morphology and structure. At room temperature, increasing the laser fluence and/or the pulse wavelength triggers the transformation from the "worm"-like interconnected islands to granular, separated islands. Increasing the substrate temperature to slightly below the Pb melting temperature results in the formation of large, nearly spherical non-wetting islands. Additionally, ultrathin Pb (111) films were grown at room temperature, which resulted in the appearance of a small number of almost 2D islands due vii to the emerging quantum size effect. Our results show that pulsed laser deposition can be used effectively for the controlled growth of Pb thin films.

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Section: Laser-target Interactionmentioning

confidence: 99%

Section: Plume Expansion In a Vacuummentioning

confidence: 99%

Section: A B Cmentioning

confidence: 99%

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confidence: 99%

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Morphology and structure of Pb thin films grown on Si(111) by pulsed laser deposition

et al. 2020

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Faraday effect and fragmentation of ferromagnetic layers in multilayer Co/Cu(1 1 1) nanofilms

Lukienko

Kharchenko

Fedorchenko

et al. 2020

Journal of Magnetism and Magnetic Materials

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With purpose to investigate influence of magnetically non-active metal layers on the Faraday effect in multilayer Ferromagnetic/Normal metal films, dependences of the Faraday rotation angles of the light polarization plane on magnetic field have been studied in multilayer [Co/Cu] nanofilms. It was revealed that the Faraday rotation φ varies with thickness of the Cu layers d Cu . This φ(d Cu ) dependence consists of the monotonic component, namely a gradual rise of the angle with increase of d Cu , and the non-monotonic one represented by two minima. The monotonic changes of the Faraday rotation were satisfactory described in frames of the effective medium method. Two minima are explained with the Co layer's fragmentation due to influence of size electron quantization in the Cu layers on formation of Co clusters during deposition of the films.

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Morphologies, metastability, and coarsening of quantum nanoislands on the surfaces of the annealed Ag(110) and Pb(111) thin films

Cited by 2 publications

References 68 publications

Morphology and structure of Pb thin films grown on Si(111) by pulsed laser deposition

Morphology and structure of Pb thin films grown on Si(111) by pulsed laser deposition

Faraday effect and fragmentation of ferromagnetic layers in multilayer Co/Cu(1 1 1) nanofilms

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