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  • 1
    Electronic Resource
    Electronic Resource
    Atomic force microscopy of (100), (110), and (111) homoepitaxial diamond films (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 5930-5940 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present atomic force microscopy images of diamond films grown by chemical vapor deposition epitaxially on diamond (100), (110), and (111) substrates. The films were grown from 0.2%–1.6% mixtures of CH4 and C2H2 in H2 in a hot-filament reactor at a total pressure of 25 Torr. The substrate and filament temperatures were held at 810–1000 and 2000–2150 °C, respectively. A (100)-oriented diamond film grown with 0.3% CH4 at a substrate temperature of 810 °C was rough on the μm scale, exhibiting pyramidal features, terraces, and penetration twins, while films grown at higher substrate temperatures and hydrocarbon flow rates were smooth on the nm scale and showed evidence of a (2×1) reconstruction. A (110)-oriented film was very rough on the μm scale but nearly atomically smooth on the 0.5–5 nm scale and exhibited local slopes higher than 40° with no evidence of faceting. A film grown on a diamond (111) substrate underwent spontaneous fracture due to tensile stress and exhibited a roughness of ≈10–50 nm on the ≈100 nm lateral scale in regions far away from any cracks. The implications of the morphological features for diamond growth mechanisms are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350443
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Tunable diode laser infrared spectroscopy of the metal/liquid interface (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 89-91 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A tunable diode laser infrared spectrometer has been constructed which can measure in situ vibrational spectra of liquids interacting with metal surfaces. The spectrometer uses a zinc selenide photoelastic modulator and commercially available diode lasers to make single-beam, single-pass measurements of molecular vibrations attributable to monolayer concentrations of molecules chemisorbed or physisorbed on metal surfaces. It also measures bulk spectra of liquids from a single reflection in an attenuated total reflection mode. With a suitable sample cell it would be possible to investigate liquids or gases at wide ranges of temperature, pressure, pH, etc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139972
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Nanometer-scale morphology of homoepitaxial diamond films by atomic force microscopy (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 1685-1687 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present the first atomic force microscopy images of diamond films grown homoepitaxially in a hot filament reactor on (100), (111), and (110) natural diamond substrates. (100)-oriented diamond films grown with 0.3% CH4 at a substrate temperature of 810 °C were rough on the micron scale, exhibiting pyramidal features and penetration twins, while films grown with 1.6% CH4 at 1000 °C were nearly atomically smooth and showed evidence of a (2×1) reconstruction. A (111)-oriented film cracked due to tensile stress and was rough on the 50–500 nm scale, while a (110)-oriented film was rough on the micron scale but nearly atomically smooth on the 0.5–5 nm scale. Implications of the observed morphologies for diamond growth mechanisms are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107237
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    Paper (German National Licenses)
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