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  • 1
    Electronic Resource
    Electronic Resource
    Smoothing of YBa2Cu3O7−δ films by ion cluster beam bombardment (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 246-248 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Smoothing high-temperature superconductor (HTS) surfaces, especially HTS thin-film surfaces, is crucial for HTS thin-film device processing. In this letter, we describe a method to planarize the surface of a YBa2Cu3O7−δ HTS film down to a smoothness with a standard deviation of 1 nm or better. The method includes first smoothing the HTS surface by ion cluster beam bombardment, followed by annealing in oxygen ambient to regrow the damaged surface layer. Additional YBCO layers can be grown epitaxially on the treated surface, even without removing the top surface layer, which contained some residual damage after annealing. This method can be integrated into HTS circuit fabrication as a key step of planarization. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.120699
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic studies of R-Ba-Cu-O superconductors made by rapid solidification (abstract) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5913-5913 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have examined the magnetic hysteresis behavior and critical current density of R-Ba-Cu-O superconductors (R=Y, Dy, Er) made by melt spinning. The samples had a spherical shape with a diameter in the range 0.2–1.5 mm. The as-spun samples became superconducting after a heat treatment at around 900 °C. The critical temperature was measured with a SQUID magnetometer and found to be in the range 60–80 K. The critical temperature showed a strong dependence on sample size and was maximum for samples with a diameter approximately 0.6 mm. The critical current density was estimated to be 2×103 A/cm2, which is comparable to the values reported for bulk samples. Scanning electron microscope data showed a very fine grain structure with an average grain size of 2 μm. Detailed magnetic, structure, and chemical composition analyses will be reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342200
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  • 3
    Electronic Resource
    Electronic Resource
    Enhanced stability of deuterium in silicon (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 3500-3502 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Tight-binding molecular dynamics has been used to simulate vibrationally excited Si–H and Si–D modes. Simulations find that vibrationally excited Si–D bending modes decay much more rapidly than Si–H bending modes, resulting in SiD bonds having much higher stability than SiH bonds. This provides a viable mechanism for reduced degradation in deuterated metal–oxide–semiconductor transistors and deuterated amorphous silicon devices. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.121640
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  • 4
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    Intense high repetition rate Mo Kα x-ray source generated from laser solid interaction for imaging application (2014)
    American Institute of Physics (AIP)
    Details
    Publication Date: 2014-11-19
    Description: We report an efficient Mo Kα x-ray source produced by interaction of femtosecond Ti: sapphire laser pulses with a solid Molybdenum target working at 1 kHz repetition rate. The generated Mo Kα x-ray intensity reaches to 4.7 × 10 10 photons sr −1  s −1 , corresponding to an average power of 0.8 mW into 2π solid angle. The spatial resolution of this x-ray source is measured to be 26 lp/mm. With the high flux and high spatial resolution characteristics, high resolving in-line x-ray radiography was realized on test objects and large size biological samples within merely half a minute. This experiment shows the possibility of laser plasma hard x-ray source as a new low cost and high resolution system for radiography and its ability of ultrafast x-ray pump-probe study of matter.
    Print ISSN: 0034-6748
    Electronic ISSN: 1089-7623
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Published by American Institute of Physics (AIP)
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