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  • 2000-2004  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Ferromagnetic resonance investigation of surface anisotropy distribution in amorphous glass-covered wires (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 4816-4818 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The distribution of the magnetic anisotropy in the surface region of amorphous glass-covered wires with positive and nearly zero magnetostriction is analyzed by means of microwave absorption ferromagnetic resonance (FMR). The surface layer of as-cast positive magnetostrictive amorphous glass-covered wires displays an axial anisotropy, which changes to radial after partial or complete removal of the glass cover. The as-cast nearly zero magnetostrictive amorphous glass-covered wires display a circumferential anisotropy in their surface layer, its direction being maintained even after partial or complete glass removal, but its strength slightly increases with glass removal. The results are explained by taking into account the most recent results on the domain structure of these wires, as well as the skin effect that occurs at microwave frequencies. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373169
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nd8Fe73Co5Hf2B12 strip cast alloy (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 5338-5340 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nd8Fe73Co5Hf2B12 alloys were cast as strips (thick continuous ribbons with thickness t=100–160 μm) by a chill disk melt spinning technique (vdisk=3 m/s) from a master alloy prepared by arc melting (A) and from two prealloyed components (B). Samples obtained by the B procedure revealed in the as-cast state, good magnetic properties with an unusually high value of the coercivity, Hc=10.3 kOe, for the substoichiometric Nd2Fe14B system. A high degree of structural refinement and a homogeneous dispersion of the phases are attained in sample B. The strength and type of magnetic interactions between the grains are presented by δM and irreversible susceptibility plots. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373340
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Linear variable differential transformer sensor using Fe-rich amorphous wires as an active core (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 5344-5346 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Results concerning linear variable differential transformer (LVDT) displacement measurements using Fe77.5Si7.5B15 amorphous wires as movable core are presented. Taking advantage of the large Barkhausen (LBE) effect in amorphous wire, a small exciting field and a small number of windings in the secondary coils are necessary to get an large output signal of the LVDT. The thermal noise of the output becomes low, due to the small number of coil turns, increasing thus the sensitivity of the LVDT. The results obtained show a linear dependence of the LVDT response on the displacement of the moving core for displacements up to about 14 mm, with accuracy of 1 μm. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373342
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    Paper (German National Licenses)
    Fulltext
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