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  • Elsevier  (56)
  • American Institute of Physics (AIP)  (8)
  • American Physical Society (APS)
  • Geological Society of America (GSA)
  • IODP
  • Soil Science Society of America (SSSA)
  • Springer Nature
  • 2000-2004  (38)
  • 1990-1994  (26)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Optical properties of amorphous InSb (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 395-397 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have presented experimental results for the optical constants of amorphous InSb films prepared by rf plasma deposition. The measured data are analyzed on the basis of a simplified model of nondirect optical transitions between the valence and conduction bands. Introducing a phenomenological damping effect into the model, the calculated spectra become structureless, which are typically observed in tetrahedrally bonded amorphous semiconductors. Results are in reasonable agreement with the experimental data over the entire range of photon energy (0.3–5.3 eV).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350721
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  • 2
    Electronic Resource
    Electronic Resource
    Small diameter nozzle plasma arc as a processing tool (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 3384-3388 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: High-power-density plasma arc equipment with a small diameter nozzle of 0.1–0.3 mm has been developed, which produces power density of about 104 W/mm2 at the exit of the nozzle. The density is comparable to those produced by electron and laser beams. In the present article, development procedure, power density on the target surface, and processing capability in comparison to the conventional electron and laser beams are described. The power density as the processing heat source depends on the kind of processing. The apparent power density in cutting is of the order of 104 W/mm2; on the other hand, that in surface hardening is of the order of 102 W/mm2. The processing capability for causing melting such as cutting and welding does not depend on the working distance, which is defined as the distance between the torch and target material; furthermore, the deviation of the torch from the correct position does not affect the processing capability. The equipment developed is suitable for an automated production system because high precision position control of the torch is not required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142556
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  • 3
    Electronic Resource
    Electronic Resource
    Epitaxial growth of InSb on sapphire by rf sputtering (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 116-118 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: InSb films have been deposited directly by rf sputtering on sapphire substrates. X-ray diffraction and scanning electron microscopy data are presented to show that the InSb layer on sapphire (0001) is epitaxial and grows with (111) parallel to the substrate surface. Optical absorption studies of the epitaxial film also reveal distinct spectral features which resemble these from bulk, single-crystal InSb.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104972
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  • 4
    Electronic Resource
    Electronic Resource
    Local current distribution in a ferromagnetic tunnel junction measured using conducting atomic force microscopy (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 5206-5208 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The local electrical properties were measured simultaneously with the topography for a Ta(50 Å)/Fe20Ni80(50 Å)/IrMn(150 Å)/Co(50 Å)/Al(13 Å)-oxide junction. The electrical image showed the contrast with around a few nm lateral size and a strong correlation with the topographical image was not observed. In the local current–voltage characteristics, data within the bias voltage of ±1.5 V were fitted well to Simmon's equation and we obtained the barrier height Φ=1.9 eV and the thickness d=12 Å. On the other hand, data with the bias voltages higher than 3 V were fitted well to Fowler–Nordheim equation. The histogram of current density was calculated by taking into consideration a Gaussian distribution of the barrier thickness and the height. The distribution of the barrier height can explain the experimental result realistically. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373296
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  • 5
    Electronic Resource
    Electronic Resource
    Magnon-assisted inelastic excitation spectra of a ferromagnetic tunnel junction (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 5209-5211 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Inelastic-electron-tunneling spectroscopy (IETS) has been applied to investigate the spin dependent tunneling process for a Ta(50 Å)/Fe20Ni80(60 Å)/IrMn(300 Å)/Co(60 Å)/Al(13 Å)-oxide/ Co(40 Å)/Fe20Ni80(200 Å) spin-valve-type tunnel junction. IET spectra for both parallel and antiparallel magnetization configurations of ferromagnetic electrodes showed a strong peak at 12 mV. The subtraction spectrum defined by the difference between the spectra of both the configurations was calculated. Spin-independent inelastic excitation processes are not affected by an external magnetic field, and thus, the subtraction spectrum indicates the inelastic modes induced only by the magnetic origin. It showed a strong peak at 12 and 20 mV for the positively and negatively biased direction of the bottom electrode, respectively. The tendency of the tunneling magnetoresistance ratio to decrease with bias voltage agreed with the shape of the subtraction spectrum. By assuming the surface magnon excitation, we obtained the distributions of the correlation length and the Curie temperature for both ferromagnetic electrode surfaces faced on the insulator. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373297
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  • 6
    Electronic Resource
    Electronic Resource
    High-resolution operation of frequency-multiplexed transition-edge photon sensors (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 81 (2002), S. 159-161 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present the multiplexed readout of two gamma-ray microcalorimeters made from transition-edge sensors. We use a frequency-domain multiplexing scheme in which each sensor is biased at an identifying frequency. We show that the energy resolution of the sensors is unaffected by multiplexing, and that crosstalk between the sensors is negligible. Our results indicate the feasibility of multiplexing 30 sensors or more to one readout line. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1489486
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  • 7
    Electronic Resource
    Electronic Resource
    Specific heat of ferromagnetic compounds RNi (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5300-5302 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The specific heats of the ferromagnetic compounds ErNi, GdNi, and HoNi were measured by means of the adiabatic method in the temperature range 2.2–100 K. The specific heats for these samples showed anomalies corresponding to the magnetic orders. For the result of ErNi above Tc we could analyze by Cv=γT+αT3. The electronic specific heat coefficient γ and the Debye temperature θD were estimated to be 90 mJ/mol K2 and 130 K, respectively. The magnetic entropy was discussed on the basis of the energy-level splitting due to the crystalline field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344589
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  • 8
    Electronic Resource
    Electronic Resource
    Long-wave motions in turbulent shear flows (1994)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 6 (1994), S. 3454-3464 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Direct Navier–Stokes simulation of the fully developed turbulent viscous incompressible fluid flows in an infinite circular pipe is performed. Calculations were carried out at Reynolds number Re=U¯2R/ν=4000, based on the mean velocity and pipe diameter. Numerical Navier–Stokes solutions obtained belong to the class of streamwise periodic solutions with large periods λmax=16πR(approximately-equal-to)7460ν/uτ, where uτ is the friction velocity. It is demonstrated that the most energetic Fourier components of velocity fluctuations correspond to very low nonzero longitudinal wave number α=2π/(0.5λmax)=0.25R−1(approximately-equal-to)1.7×10−3uτ/ν. These long-wavelength motions were not resolved before in numerous channel and pipe flow simulations carried out with periodicity lengths λmax〈2500ν/uτ. Space–time structure of the turbulent flow as well as associated wave-like motions are investigated. The possibility and accuracy of the velocity field approximation by the superposition of traveling and standing waves is analyzed. It is shown that the parameters of such a representation (wave amplitudes, phase velocities, the position of wave front, etc.) are strongly dependent on the inclusion of low longitudinal wave numbers in the Navier–Stokes simulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.868402
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  • 9
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    Electron spin echo study of long-lived radicals which cause mutation in γ-ray irradiated mammalian cells (2000)
    Elsevier
    Details
    Publication Date: 2000-11-01
    Print ISSN: 1386-1425
    Electronic ISSN: 1873-3557
    Topics: Chemistry and Pharmacology , Physics
    Published by Elsevier
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  • 10
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    Application of image processing techniques for analysis of nano- and micro-spaces in carbon materials (2001)
    Elsevier
    Details
    Publication Date: 2001-11-01
    Print ISSN: 0379-6779
    Electronic ISSN: 1879-3290
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Elsevier
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