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  • 61.46. + w  (1)
  • 68.55.Ln  (1)
  • PACS: 61.16.Di; 61.80.Jh; 78.65.-s  (1)
  • Springer  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Silver nanoclusters formation in ion-exchanged waveguides by annealing in hydrogen atmosphere (1996)
    Springer
    Applied physics 63 (1996), S. 403-407 
    Details
    ISSN: 1432-0630
    Keywords: 42.70 ; 61.46. + w ; 68.55.Ln
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Light waveguides containing silver, introduced by ion-exchange process in soda-lime glass, has been annealed in hydrogen atmosphere at temperatures in the 120–250°C range. Annealings cause a near-surface precipitation of metallic silver to form nanometer-size clusters with good uniformity in size and spatial distribution. Hydrogen permeation and ion-exchange between hydrogen and sodium (which remains in the glass matrix after silver-for-sodium exchange) are steps of the annealing process. A further step is the diffusion of silver ions towards the surface, and its eventual precipitation, with an activation energy close to that measured for silver-sodium interdiffusion in glasses of comparable composition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01567335
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  • 2
    Electronic Resource
    Electronic Resource
    Formation of metallic nanophases in silica by ion beam mixing. Part II: cluster formation (1998)
    Springer
    Applied physics 67 (1998), S. 241-247 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 61.16.Di; 61.80.Jh; 78.65.-s
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 2 matrix by ion-beam mixing of SiO2/Ag multilayers is studied via Rutherford backscattering spectrometry, optical absorption, and transmission electron microscopy experiments. In a first step, irradiation with MeV heavy ions transforms the continuous Ag layers into a string of micrometer-sized Ag inclusions. This mechanism can be attributed to lateral segregation of metallic atoms induced by irradiation. In a second step, the Ag inclusions are broken up by incoming ions and Ag nanoclusters are formed by agglomeration of mobile Ag atoms. The latter mechanism is likely due to a combination of ballistic mixing and radiation-induced segregation or radiation-enhanced diffusion processes. The size of the metallic nanoclusters formed depends also on the irradiation temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050765
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