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  • PACS. 68.43.-h Chemisorption/physisorption: adsorbates on surfaces – 81.07.Pr Organic-inorganic hybrid nanostructures – 81.16.Be Chemical synthesis methods  (1)
  • PACS. 72.80.-r Conductivity of specific materials – 72.80.Le Polymers; organic compounds (including organic semiconductors) – 81.05.Lg Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials  (1)
  • Springer  (2)
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  • Springer  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Preparation and characterization of cobalt-based nanostructured materials (2003)
    Springer
    The European physical journal 31 (2003), S. 545-551 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 68.43.-h Chemisorption/physisorption: adsorbates on surfaces – 81.07.Pr Organic-inorganic hybrid nanostructures – 81.16.Be Chemical synthesis methods
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Nano-sized cobalt clusters passivated by alkane-thiol molecules were obtained by the action of concentrated thiol solutions on micrometric cobalt particles. Thiol molecules caused an erosive process on the metal grains with the consequent formation of nano-sized metal debris and cobalt thiolate as by-product. The final material microstructure was composed by cobalt clusters embedded into a continuum cobalt thiolate matrix. Depending on the thiol molecule length, the material texture ranged from rubbery to waxy. These new types of nanocomposite materials were found to be crystalline, thermally stable up to ca. 300 °C, intensely red colored, and high hydrophobic. In addition, they generated polymeric structures when dissolved in non-polar solvents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2003-00064-0
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  • 2
    Electronic Resource
    Electronic Resource
    Low temperature magneto-conductivity properties of micro-sized Ag/HD-PE metal/polymers (2001)
    Springer
    The European physical journal 21 (2001), S. 485-489 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 72.80.-r Conductivity of specific materials – 72.80.Le Polymers; organic compounds (including organic semiconductors) – 81.05.Lg Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: A composite material of a polyethylene matrix filled by a fine silver powder was prepared with different Ag contents and physical behaviours ranging from insulator to conductor. Ac differential magnetic susceptibility χ measurements show the samples are paramagnetic up to an Ag concentration of ∼65%. At low temperatures the composite is spin-glass type, whereas the transition from insulator to conductor corresponds to an abatement of χ at zero magnetizing field. Magneto-conductivity effects have been observed in resistivity measurements at low temperatures. They can be explained in terms of an effective exchange electronic scattering mechanism between the conduction electrons and the diluted magnetic moments arising from unpaired electron spins of boundary silver particles. Moreover, the presence of a broad minimum in the resistivity curve at T = ∼ 20 K, observed in samples with an Ag concentration just above the percolation threshold, addresses to possible interference effects similar to those reported in disordered materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510170157
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