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  • American Institute of Physics (AIP)  (5)
  • Springer  (2)
  • Geological Society of America (GSA)
  • 1985-1989  (7)
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  • 1
    Electronic Resource
    Electronic Resource
    Formation of metastable compounds and magnetic properties in rapidly quenched (Fe1−x Cox)5Sm and (Fe1−xCox)7Sm2 alloy systems (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5974-5976 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The formation of metastable (TM)5Sm and (TM)7Sm2 (TM=Fe-Co) compounds and their magnetic properties have been investigatyed by the x-ray diffraction method and analysis of thermomagnetization curves for rapidly quenched (Fe1−x Cox)5Sm and (Fe1−x Cox)7Sm2 (0≤x≤1.0) alloys. The (Fe1−x Cox)5Sm compound is formed with a single phase in the range 0.7≤x≤1.0 and a mixture with other stable compounds in other composition range. On the other hand, the metastable (TM)7Sm2 compound exists in the mixed state with a large amount of (TM)3Sm stable compound in the range 0.7≤x≤1.0. The single phase (RM)5Sm compound exhibits a huge coercivity of 5–14 kOe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342167
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic properties of Co-R (R=Pr,Nd,Sm,Gd,Dy,Er) amorphous alloys (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5489-5491 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetization and susceptibility have been measured in the temperature range 4.2–300 K for amorphous Co100−x Rx (R=Pr,Nd,Sm,Gd,Dy,Er; 50≤x≤70) alloys prepared by a liquid-quenching technique. All alloys show a normal ferromagnetic behavior at low temperatures and a Curie–Weiss-type temperature dependence of susceptibility in the paramagnetic regime except for the Co-Sm alloy system. In the case of the Co-Sm alloys, a field-cooling effect at lower temperatures and a temperature dependence of paramagnetic susceptibility similar to that of the Van Vleck ion are observed. From analysis of the average effective moment, it is concluded that the Co no longer sustains a moment above 60 at. % R.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342335
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetic relaxation in amorphous (Fe,Co)100−xBx alloys (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3575-3577 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The disaccommodation and the uniaxial magnetic anisotropy induced by magnetic annealing were studied for rapidly quenched amorphous Fe100−xBx (12≤x≤25) and Co100−xBx (17≤x≤30) alloys. The disaccommodation exhibits a maximum between 150–250 °C for Fe-B and 50–250 °C for Co-B alloys. The compositional dependence of both disaccommodation and induced magnetic anisotropy constant exhibits an anomaly at x=20. The origin of disaccommodation is discussed in connection with the induced magnetic anisotropy. Further, the compositional dependence of induced magnetic anisotropy is discussed based on the compositional short-range ordering.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335011
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  • 4
    Electronic Resource
    Electronic Resource
    Spin glass in Fe-Ni Invar alloys (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3456-3458 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Initial ac susceptibility χ was examined in the temperature range from 4.2 K to Curie temperatures for polycrystalline Fe100−xNix (20≤x≤50) alloys. The reentrant spin glass is found in x=30–45 alloys. The dependence of the freezing temperature Tg on the intensity of driving magnetic field (ac: 0–0.26 Oe; dc: 0–10 Oe) and on the frequency (140–9200 Hz) was studied for the Fe65Ni35 alloy. A strong magnetic relaxation is observed below Tg. These results are discussed based on the cluster model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335075
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  • 5
    Electronic Resource
    Electronic Resource
    Axisymmetric problem of vortex sound with solid surfaces (1986)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 29 (1986), S. 4006-4015 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A general formulation of the axisymmetric vortex sound is given, and three typical problems are considered in detail, in which the acoustic wave is generated by a vortex ring interacting with either a sphere, a circular disk, or a circular aperture of a plane wall in an axisymmetric manner. The velocity potentials induced by the vortex in the presence of the body are determined by the method of dual integral equations or the image vortex. From the vortex trajectories, the acoustic wave fields are determined. The method of matched asymptotic expansions yields the result that the force exerted on the body is related to the profile of the dipole component. It is also found that the wave amplitude is expressed in terms of the value of a streamfunction at the vortex position, which represents a hypothetical potential flow around the body and is defined appropriately in each problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865741
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  • 6
    Electronic Resource
    Electronic Resource
    Landau laminar intermediate state structures with straight Normal-Superconducting boundaries (1988)
    Springer
    Journal of low temperature physics 71 (1988), S. 215-221 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Under the criterion that normal-superconducting (NS) boundaries are straight when the sample thickness is less than the coherence length, experimental conditions for superconducting lead and aluminum are investigated where Landau laminar intermediate state structures with straight NS boundaries are expected. It is shown that in a narrow range near the critical temperature and in low magnetic fields, type I superconductors thicker than the critical thickness should have a laminar structure with straight NS boundaries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00118576
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  • 7
    Electronic Resource
    Electronic Resource
    Landau laminar intermediate state structures: Surface energy between normal and superconducting domains in type I superconductors with small κ values (1988)
    Springer
    Journal of low temperature physics 71 (1988), S. 223-230 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: An expression for the surface energy at the normal-superconducting boundaries of a laminar intermediate state structure is derived as a function of a s /δ, where a s is the width of superconducting domains and δ the surface energy parameter. Numerical calculations show that the ratio δ/ξ (ξ is the coherence length) is almost constant for a s/δ larger than the limit of about 4. This value corresponds to the critical film thickness that separates the regions of type I and type II superconducting behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00118577
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