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  • 1
    Electronic Resource
    Electronic Resource
    Stereoselective synthesis of (.eta.6-arene)Cr(CO)3 complexes possessing a chiral center at the benzylic position (1986)
    s.l. : American Chemical Society
    The @journal of organic chemistry 51 (1986), S. 2859-2863 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00365a001
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  • 2
    Electronic Resource
    Electronic Resource
    Soft magnetic properties and film structures of Fe-C/Ta multilayered films (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 8285-8290 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Fe-C/Ta multilayered films with low Ta diffusion into Fe are examined to find thermally stable soft magnetic Fe-based multilayers. Although coercivities of Fe-C/Ta multilayered films increase after heat treatment at 300–400 °C, they decrease to 〈200 A/m after heat treatment at 500–600 °C. Relative permeabilities of the multilayers with C concentrations of 5–7 at. % are 3000 at 500–600 °C, corresponding to the low coercivities. The magnetostriction constant changes from positive to negative as the heat-treatment temperature increases. Fe-C/Ta multilayered films show clear periodic structures at 300–600 °C. However, the periodic structure disappears and Fe crystallite growth occurs at 700 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347437
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  • 3
    Electronic Resource
    Electronic Resource
    Soft magnetic properties of Fe multilayered films with amorphous intermediate layers (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 858-864 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Amorphous intermediate layers are studied to improve soft magnetic properties of Fe-based multilayers, since the interfacial stresses between layers are assumed to be low. Fe multilayers with crystalline intermediate layers (e.g., Ni-Fe alloy) required heat treatment to release interfacial stress to achieve soft magnetic properties. Multilayers Fe/B4C, Fe/SiC, and Fe/C (B4C, SiC, and C layers are amorphous when formed by ion beam sputtering) show relative permeabilities over 2000 and coercivities below 56 A/m (=0.7 Oe), even without heat treatment. In particular, Fe/B4C multilayers with B4C thicknesses over 0.5 nm show clear periodic structures, even smaller crystallite sizes, and relative permeabilities above 3000, while the films have saturation magnetic flux densities above 1.8 T.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353297
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  • 4
    Electronic Resource
    Electronic Resource
    A nonequilibrium fixed-parameter subgrid-scale model obeying the near-wall asymptotic constraint (2000)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 12 (2000), S. 2338-2344 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A subgrid-scale (SGS) model is presented with two fixed nondimensional model parameters adopted, which is in the same line of the Smagorinsky model combined with Van Driest's wall damping function. The proposed model, however, possesses two features that are typical of the dynamic SGS modeling. One is that it is not based on the equilibrium assumption about the SGS-energy production and dissipation rates. The other is that the model is not dependent on a wall-unit coordinate and obeys the correct near-wall asymptotic behavior, unlike the Smagorinsky–Van Driest model. This model is applied to channel flows, and the computed results are discussed in comparison with the direct numerical simulation and the Smagorinsky–Van Driest model. Special attention is paid to the dependence of the results on the Reynolds number, the grid resolution, and the choice of a filter function. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1287518
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  • 5
    Electronic Resource
    Electronic Resource
    Structural origin of magnetic biased field in NiMn/NiFe exchange coupled films (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 7896-7904 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The factors which determine the strength of the magnetic biased field in NiMn/NiFe exchange biased system have been examined. It was found that a strong NiFe (111) texture and columnar growth are essential to obtaining a high exchange field as they facilitate epitaxy between the NiFe and NiMn layers. The application of an amorphous Ta nucleation layer and substrate biasing during NiFe deposition have been found to promote these structures. Fcc NiMn replicates the (111) texture through epitaxial growth on NiFe according to a cube on cube orientation relationship. Upon annealing, atomic ordering takes place in the NiMn layer and gives rise to an exchange biased field. However, a fully L10 ordered structure cannot be achieved at the NiMn/NiFe interface due to the stabilizing effect of fcc NiFe. Away from the interface, the transformation proceeds and the ordered tetragonal unit cell creates a lattice strain within the NiMn film. This strain is relieved by twinning within the NiMn grains of the film. The strength of the exchange field has been found to be closely associated with the density of twins and their proximity to the NiMn/NiFe interface. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362401
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  • 6
    Electronic Resource
    Electronic Resource
    Fe-C film formation by dual ion beam sputtering (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 5480-5483 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Fe-C films are formed by dual ion beam sputtering in which an ion beam irradiates the substrate during film formation. The magnetic properties and film structure of the resulting Fe-C films are investigated. As the acceleration voltage of the substrate beam increases, C concentration in the Fe-C films decreases, thereby changing the magnetostriction constant of the film from positive to negative. When films formed at an acceleration voltage of 0, 200, and 400 V are heated at 100, 300, and 400 °C, respectively, the relative permeability of each film reaches a maximum. The Fe-C film with 8 at. % C has a room-temperature saturation magnetic flux density of 2.2 T, a relative permeability of 900, and a magnetostriction constant near zero.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338241
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  • 7
    Electronic Resource
    Electronic Resource
    Soft magnetic properties of Fe-C/Ni-Fe multilayered films (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 3157-3162 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The paper examines soft magnetic properties and film structures of Fe-C/Ni-Fe multilayers formed by the dual ion-beam sputtering method. The following results are obtained. (1) The addition of C to Fe improves the soft magnetic properties of Fe, making its magnetostriction constant zero while keeping its high saturation magnetic flux density. (2) The insertion of Ni-Fe intermediate layers between Fe-C layers further improves the soft magnetic properties to a relative permeability of 3000, with a saturation magnetic flux density of 2.0 T. (3) The improvements in the soft magnetic properties are due to reductions in the magnetic anisotropy dispersions and the mean anisotropy field, which in turn are due to reduction of crystallite diameter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341531
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  • 8
    Electronic Resource
    Electronic Resource
    Magnetic properties and film structures of Fe/C multilayers (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3203-3205 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic properties and film structures of Fe/C multilayers (period: 5–50 nm) formed by ion beam sputtering are studied. The coercivity in the easy axis direction is decreased from 380 A/m (=4.8 Oe) to 25 A/m (=0.3 Oe) by reducing the period from 50 to 5 n. The relative permeability increases to a maximum of approximately 3000 with increasing C layer thickness. Cross-sectional transmission electron microscopy and Auger electron spectroscopy show that Fe layers are clearly separated by C layers, resulting in small Fe crystallites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340839
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  • 9
    Electronic Resource
    Electronic Resource
    Modeling of the dynamic subgrid-scale viscosity in large eddy simulation (1996)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 8 (1996), S. 2254-2256 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The dynamic subgrid-scale (SGS) viscosity is reexamined on the basis of the production process of the SGS Reynolds stress. A new model for the SGS viscosity is proposed in place of the Smagorinsky-type model of mixing-length form. The model is applied to a channel flow, and the comparison with other models is made. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.869001
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  • 10
    Electronic Resource
    Electronic Resource
    Interface-trap generation modeling of Fowler–Nordheim tunnel injection into ultrathin gate oxide (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 58 (1985), S. 387-391 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two mechanisms for interface-trap generation during Fowler–Nordheim tunnel injection into gate oxide are confirmed by the results of experiments with changes in the interface-trap density for positive and negative gate bias injections. One mechanism is independent of gate bias polarity during injection, the other mechanism is present only in negative gate bias injection. Agreements between the measured and calculated generation cross sections for both mechanisms indicate that: (i) The first mechanism is quantitatively explained using a broken-bond model by taking account of electron heating due to an oxide field during passage through the oxide conduction band. (ii) The second mechanism is quantitatively explained using a heated electron impact model where electrons heated by the oxide field generate interface traps by directly breaking the interface weak bonds when electrons cross the interface between the SiO2 and the Si substrate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335690
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