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  • 1990-1994  (9)
  • 1985-1989  (6)
  • 1990  (9)
  • 1988  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Magnetic anisotropy of IBS Ni films (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5440-5442 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic anisotropy in Ni films deposited on Pyrex glass substrates by different sputtering methods, i.e., ion beam sputtering (IBS), triode rf sputtering, and diode rf sputtering, was studied in relation to the internal stress in the films. Strong in-plane easy magnetic anisotropy (Ku=−4.9×105 erg/cm3) was observed in IBS Ni films. The average in-plane stress in the IBS film was estimated from the radius of convex curvature of the disk substrate as large as −1.2×1010 dyn/cm2 (a negative sign implies the compressive stress), which is due to the atomic peening effect by kinetic incident atoms during deposition. The stress-induced magnetic anisotropy is calculated to be about −1.2×106 erg/cm3, which is overwhelming to the observed magnetic anisotropy in the IBS Ni film. Positive Ku and tensile internal stress, one or two order of magnitude smaller in absolute values than that in IBS film, were observed in Ni films prepared by the other sputtering methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342340
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  • 2
    Electronic Resource
    Electronic Resource
    The pressure effect of the Curie temperature in TbAl2 (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5298-5299 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The pressure effect of the ferromagnetic Curie temperature in Tb(Al1−xCox)2, 0≤x≤0.1 was measured by the induction method under hydrostatic pressure. The Curie temperatures of these compounds increased with increasing pressure and the derivative dTc/dp as a function of cobalt concentration did not change so much compared with that of Gd(Al1−xCox)2 [Sato et al., J. Phys. (Paris) Colloq. 49, C8-453 (1988)]. These results are discussed on the basis of the RKKY model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344588
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Low-duty pulsed PIG source in HIMAC : International conference on ion sources (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 466-468 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A low-duty pulsed PIG source has been developed for the injector (e/m= (1)/(7) – 1/4 ) of HIMAC. This source is of an indirectly heated PIG type. The requirement for this source is a high current with a low repetition rate and a low-duty factor. To obtain good stability during pulsed operation, the source is operated in a positive arc impedance range. Pulsed operation also allows the arc voltage to be high (1.4 kV), resulting in a high yield of multiply charged ions. With an arc pulse width of 500 μs (1 Hz and a duty of 0.05%), a useful beam pulse width of 200 μs with a peak intensity of 120 μA for Ar6+ has been obtained at an optimum gas pressure of 10−3 Torr. This intensity is higher than for cw mode by a factor of 5. A 90% emittance has also been measured to be 250π mm mrad in both the X and Y directions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141275
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  • 4
    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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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Dynamic behavior of two-laser-induced bubbles in water (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 234-236 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two bubbles are simultaneously generated in water by focusing a Q-switched ruby laser. The dynamic behavior of the induced bubbles is investigated by means of high-speed photography. Consequently it is found that the bubble–bubble interaction is significantly influenced not only by the relative size of bubbles but also by the mutual distance between them. When two bubbles are axisymmetrically produced one behind the other near a rigid wall, we can observe a very interesting phenomenon, bubble splitting followed by bubble pinching.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103726
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  • 6
    Electronic Resource
    Electronic Resource
    Critical currents of superconducting BiPbSrCaCuO tapes in the magnetic flux density range 0–19.75 T at 4.2, 15, and 20 K (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 1928-1929 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Critical currents of superconducting silver-sheathed tapes of Bi1.8Pb0.4Sr2Ca2.2Cu3Ox have been measured in the magnetic flux density range 0–19.75 T at 4.2, 15, and 20 K. One tape achieved a critical current of 60.6 A at 19.75 T and 20 K; the corresponding critical current density is 551 A/mm2. In the same field, the tape has critical currents of 72.3 A (657 A/mm2) at 15 K and 94.2 A (856 A/mm2) at 4.2 K. At 77 K and in zero field, the tape carries 32.9 A (299 A/mm2). These results indicate that "high Tc'' superconducting magnets of engineering interest may soon be feasible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104146
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Proton NMR relaxation study of molecular motion in poly(.gamma.-n-octadecyl L-glutamate) and poly(.gamma.-oleyl L-glutamate) (1990)
    s.l. : American Chemical Society
    Macromolecules 23 (1990), S. 4908-4911 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00225a004
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  • 8
    Electronic Resource
    Electronic Resource
    Atrial natriuretic peptide in hyperthyroidism: Effect of Β-adrenergic blockade (1990)
    Springer
    Journal of molecular medicine 68 (1990), S. 441-441 
    Details
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01648591
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  • 9
    Electronic Resource
    Electronic Resource
    The accumulation of11C-methionine in cerebral glioma patients studied with PET (1990)
    Springer
    Acta neurochirurgica 104 (1990), S. 8-12 
    Details
    ISSN: 0942-0940
    Keywords: Amino acid metabolism ; cerebral glioma ; brain tumour ; 11C-methionine ; PET
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Fourteen patients with cerebral gliomas were studied with positron emission tomography (PET) using L-[methyl-11C]methionine (11C-MET). Positive images of tumour were obtained in all cases regardless of histological grades. The analysis of differential absorption ratio (DAR) showed the higher accumulation of11C-MET in high grade gliomas than in low grade gliomas. PET study with11C-MET will be of great value not only in delineating the location of gliomas, but also in making a qualitative diagnosis from the view point of the biological properties of gliomas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01842885
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    A study on lateral impact of Timoshenko beam (1990)
    Springer
    Computational mechanics 6 (1990), S. 101-108 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The impact of solid bodies occurs in machines and it is the primary reason of noise and vibration. To understand the quantitative characteristics of noise and vibration, it is necessary to understand the motion of solid bodies, especially the deformation of the surface. In this study the authors analyze theoretically and numerically the impact phenomena on a falling body of a Timoshenko beam. Also we have compared a Bernoulli-Euler hinged-hinged beam and a Timoshenko hinged-hinged beam with regard to the impact of a cylindrical body on each of them. The conclusions are as follows: (1) the impact force, the deflection and the bending moment of the Timoshenko beam, and the displacement of the falling body can be calculated precisely according to the equations derived from this study, (2) the examination of the Timoshenko beam are compared with that of the Bernoulli-Euler beam, (3) the Timoshenko beam deflections with the passage of time are illustrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350516
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