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  • 1
    Electronic Resource
    Electronic Resource
    Compositional inhomogeneities in sputtered Co-Cr magnetic thin films studied by atom probe field ion microscopy (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 8025-8031 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Compositional inhomogeneities in Co-22 at. % Cr sputtered thin films have been studied quantitatively using atom probe field ion microscopy. For comparison, a Co-22 at. % Cr bulk alloy specimen has also been examined. As predicted from the recently published phase diagram, a solution treated Co-Cr bulk alloy specimen does not contain detectable chemical inhomogeneities. On the other hand, the Co-22 at. % Cr thin film sputter deposited at 200 °C consists of two distinct phases with different Cr concentrations. The size of each phase is in the order of 8 nm which is significantly smaller than the grain size of the specimen; however, the film that was sputter deposited at ambient temperature exhibited a significantly lower level of compositional inhomogeneity. Based on these results, it is concluded that the phase separation progresses when thin films are deposited on heated substrates. © 1994 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357921
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  • 2
    Electronic Resource
    Electronic Resource
    Thermophotometric study of phase transformations in silver-zinc alloy thin films (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 3941-3946 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The transformations between β1, ζ, and β phases in a sputter-deposited Ag-50 at. % Zn alloy thin film were examined by a developed thermophotometric apparatus. Good observations were made using the change in reflectivity of the thin film with temperature and time, and some characteristic transformation behaviors in the thin film were made clear. Kinetics of the β1→ζ transformation were analyzed using the Johnson–Mehl–Avrami equation. The activation energy obtained from the relaxation time measured at different temperatures was 220.6 kJ/mol. It was much larger than that in the bulk. The time exponent of the equation was 1.51. This shows that the ζ phase nucleates at the grain edge and/or the boundary of the β1 phase after site saturation under a zero nucleation rate. The activation entropy was a large positive value, and the transformation interface was expected to have a complicated structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339214
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  • 3
    Electronic Resource
    Electronic Resource
    Heterogeneous silicon crystal growth on a single-crystal silicon wafer (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 5851-5853 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Using a new process, a large grain polycrystalline silicon layer was grown directly from molten Si on a single-crystal silicon wafer at a rate 100 times faster than the conventional chemical vapor deposition process. A polycrystalline silicon layer was also produced on a single-crystal silicon wafer, which had an oxide layer and etched V grooves, through use of an additional ultrasonic wave effect in this process. A layer thickness of 100–600 μm and a grain size of 10 μm–3 mm were controllably obtained. After the growth of the polycrystalline layer, dislocation densities of 4×105 cm−2 for the single-crystal silicon substrate, and 2×106 cm−2 for the polycrystalline layer were obtained. Some devices were fabricated from the products of this new process, and the characteristics of these devices were investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.343606
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  • 4
    Electronic Resource
    Electronic Resource
    Reversible color changes in sputter-deposited Ag-Zn alloy films (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 4632-4636 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Reversible color-change behavior and its relation to phase transformations in sputter-deposited Ag-50 at. % Zn alloy films were investigated by spectral reflectivity measurements, x-ray diffractometry, and transmission electron microscopy. The color of the alloy film is pink at room temperature when produced by quenching above 560 K, and is silver by quenching between 425 and 545 K. By alternately repeating these heat treatments, the two colored states can be reversibly produced. This color change is observed as reflectivity changes at wavelengths below 600 nm and in the near-infrared range for spectral reflectivity. The pink-colored film has a CsCl-type ordered structure (β' phase), while the silver colored has a hexagonal one (ζ phase). Therefore, the reversible color change is due to the solid-state phase transformations between the β' and ζ phases. By irradiation with semiconductor laser beam, the color change can be induced in a microarea (about 1 μm) of the film.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341143
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  • 5
    Electronic Resource
    Electronic Resource
    Observation of loss boundaries and ion flux spectra of end-loss ions in the tandem mirror GAMMA 10 (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 3823-3826 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Loss boundaries and ion flux spectra of end-loss ions have been observed by means of a new diagnostic device in the tandem mirror GAMMA 10 [Nucl. Fusion Suppl. 1, 429 (1983)]. In consequence of measuring simultaneously both the pitch angle profile and energy of the end-loss ions, the loss boundaries were directly ascertained to be composed of two hyperbolic lines characterized by the electrostatic plug potential in the velocity space, and also high outer mirror throat potential was found. The flux spectra were compared with the two types of theoretical results, and discussed from a viewpoint of Coulomb collision.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860338
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  • 6
    Electronic Resource
    Electronic Resource
    The energy component analyzer and spectrum analysis of end-loss ions in a tandem mirror (1991)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 62 (1991), S. 899-905 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Features of the electrostatic energy analyzer of a cylindrical type are described with the aim of measuring the end-loss ions in the tandem mirror GAMMA 10. The analyzer provides us with information about ion density distributions in a loss-cone region of velocity space as well as plug potential in the tandem mirror. Application of the analyzer to the tandem mirror experiments and the energy spectrum analysis are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142027
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  • 7
    Electronic Resource
    Electronic Resource
    Subsonic multiple-jet aerodynamic window (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 677-681 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An experimental apparatus, which simulates a subsonic multiple-jet aerodynamic window, is fabricated and aerodynamic characteristics of the single-curved jet and the multiple-curved jets are studied. A nondimensional quantity ξ is introduced in order to represent the magnitude of the power consumption. Then, the effect of the window configuration on ξ is evaluated experimentally. Within the range of the present experiments, it is shown that the power consumption of the multiple-jet aerodynamic window can be made less than that of the single-jet scheme, if at least three stages of jets are utilized. It is also shown that the design of the window configuration is important to reduce the power consumption and to obtain the stable operation of multiple-curved jets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138203
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  • 8
    Electronic Resource
    Electronic Resource
    Kinetic applications of electron paramagnetic resonance spectroscopy. 34. Rate constants for spin trapping. 2. Secondary alkyl radicals (1979)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 101 (1979), S. 4975-4981 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00511a030
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  • 9
    Electronic Resource
    Electronic Resource
    Kinetic applications of electron paramagnetic resonance spectroscopy. 35. The search for a dialkylaminyl rearrangement. Ring opening of N-cyclobutyl-N-n-propylaminyl (1980)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 102 (1980), S. 328-331 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00521a052
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  • 10
    Electronic Resource
    Electronic Resource
    Two-dimensional assembly of gold nanoparticles with a DNA network template (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 1181-1183 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gold nanoparticles have been assembled into two-dimensional complexes using a DNA network template. Atomic force microscope images indicate that gold nanoparticles can be artificially arranged using a DNA molecular template with an average separation of 260 nm. Furthermore, the pattern of the complex can be controlled by changing the concentration of the DNA solution. The results suggest that this method is effective in achieving positional control of nanoscale arrangements for a wide range of applications. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1396630
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