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  • 1995-1999  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A novel application of atomic force microscope to identify the Ag and I planes of β-AgI single crystals (1997)
    Springer
    Materials research innovations 1 (1997), S. 197-203 
    Details
    ISSN: 1433-075X
    Keywords: Key words Atomic force microscopy ; Polar-surface ; Silver iodide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  Atomic Force Microscopy is used to determine the crystallographic polarity of the surfaces of β-AgI single crystals. The studies reveal that the hexagonal packed Ag+ plane is the (001) and the I– plane is the (001–). This observation is also consistent with the earlier x-ray diffraction measurements and chemical etching techniques as well as the polarizability and electronegativity of the ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100190050040
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Anisotropic photoluminescence characteristics of Al0.08Ga929292As single quantum well laser structure (1996)
    Springer
    Journal of materials science 31 (1996), S. 4793-4799 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A nominal well width (20 nm) of Al0.08Ga0.92As quantum well structure has been fabricated by molecular beam epitaxy technique with the aim of obtaining a lasing device. The temperature evolution of quantum well photoluminescence was studied in the range 10–300 K which shows excitons being trapped at the interfacial defects below 100 K. The linear polarization effects in the photoluminescence have been studied for the incident and collected light propagating parallel to the plane of the well layer. In a very careful study, the luminescence was found to be fully polarized for the incident electric vector parallel to well layers, while it showed depolarized behaviour for the incident electric vector perpendicular to the well layers. The earlier conclusions based on photoluminescence excitation and absorption studies of heavy- and light-hole emissions are supported. The 20 nm quantum well structure has been corroborated using scanning tunnelling microscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00355863
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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