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  • 1
    Electronic Resource
    Electronic Resource
    Growth and Characterization of TlBaCaCuO Thin Films (1998)
    Springer
    Journal of superconductivity 11 (1998), S. 135-138 
    Details
    ISSN: 1572-9605
    Keywords: Superconductor ; thallium ; Tl-Ba-Ca-Cu-O ; film ; growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We discuss two methods tor the ex-situ furnace growth of pure TIBaCaCuO superconducting thin films on LaAlO3(100) substrates. The traditional approach of “crucible processing” is used to grow high-quality films of several of the TIBaCaCuO phases. “Two-zone processing” promises greater thermodynamic control, yet film properties from optimized films are not as good as those grown from crucibles. The transport kinetics of Tl-oxide vapor from a source to the film surface appears to be a dominant factor. The best results are from single-phase Tl-1212 and Tl-2212 thin films. Tc's are high and sharp, Jc's 〉 1 × 107 A/cm2 at 5 K, and surface morphologies are relatively smooth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022687408646
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  • 2
    Electronic Resource
    Electronic Resource
    Multifractal percolation and growth in intermittent media (1997)
    Springer
    Journal of statistical physics 87 (1997), S. 607-611 
    Details
    ISSN: 1572-9613
    Keywords: Scaling ; percolation ; growth ; intermittency ; moments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Havlin-Bunde multifractal hypothesis for the probability density of a random walker is used to obtain the scaling law of thepth-order correlation function of the concentration (for percolation) and of the height (for growing surfaces) differences:c p (r)=〈|Θ(x+r)−Θ(x)| p 〉∼r ς p in intermittent media. It is shown that near the transition to homogeneity σ p =A p In(p/p o)(whereA andp 0 are some constants). Good agreement with recent experiments and computer simulations of different authors is established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02181239
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  • 3
    Electronic Resource
    Electronic Resource
    Hydrates in the ocean and evidence for the location of hydrate formation (1996)
    Springer
    International journal of thermophysics 17 (1996), S. 1-13 
    Details
    ISSN: 1572-9567
    Keywords: amorphous silica ; carbon dioxide ; clathrates ; growth ; hydrates ; hypothesis ; natural gas ; nucleation ; ocean ; sodium dodecyl sulfate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract There is substantial evidence that the oceans of the world will pose the most important challenges in the area of hydrate formation. This work indicates three areas of concern for hydrate formation in the ocean: (1) deposits of natural gas in ocean hydrates, which will serve as an energy resource and environmental concern in the next tnillenium, (2) a recent proposal for the ocean storage of carbon dioxide in the form of hydrates, and (3) the prevention of hydrate formation in ocean pipelines. To address such applications, fundamental knowledge on the site of hydrate formation was determined. Results are presented for quiescent, high-pressure experiments done in a sapphire tube to determine the site of hydrate formation in deionized water and in mixtures with amorphous silica and sodium dodecyl sulfate. Visual (microscope aided) results are presented for formation with a typical gas mixture and with carbon dioxide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01448204
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  • 4
    Electronic Resource
    Electronic Resource
    Reduced Mobility of Triple Nodes and Lines on Grain Growth in Two and Three Dimensions (1999)
    Springer
    Interface science 7 (1999), S. 285-295 
    Details
    ISSN: 1573-2746
    Keywords: computer simulation ; growth ; energy dissipation ; grain boundaries ; triple nodes (Interfaces) ; triple line (Interfaces)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Vertex dynamics models in two and three dimensions are applied to study grain growth including a limited mobility of triple points (two dimensions) and triple lines (three dimensions). A recent experiment on a triple node is used to validate the proposed model. The reduced triple node/line mobility in the case of a polycrystalline sample is shown to influence both, the grain growth kinetics and the grain size distribution function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008773411083
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis and Characterization of a Polycrystalline Ionic Thin Film by Large-Scale Molecular-Dynamics Simulation (1999)
    Springer
    Interface science 7 (1999), S. 15-31 
    Details
    ISSN: 1573-2746
    Keywords: polycrystal ; ionic ; oxide ; molecular-dynamics ; simulation ; growth ; thin film ; structure ; characterization ; grain boundary
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A simulation methodology for the synthesis of polycrystalline, ionic thin films is developed. The method involves the preparation of a polycrystalline substrate onto which a thin film is subsequently grown by crystallization from the melt. A detailed structural analysis of a textured sixteen-grain FeO film, with a grain size of approximately 4.7 nm, shows that the interiors of the grains are almost perfect single crystals with only a very few vacancies and no interstitials. The grains are delineated by 〈001〉 tilt grain boundaries; as expected, the low-angle grain boundaries in the film consist of arrays of dislocations, while the high-angle grain boundaries are relatively narrow and well ordered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008782230777
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