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  • American Institute of Physics (AIP)  (2)
  • 1985-1989  (2)
  • 1985  (2)
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  • 1985-1989  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic and magneto-optic properties of Tb-FeCo-Al films (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3903-3905 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The influence of an addition of Al on the corrosion resistance of amorphous 100-nm-thick Tb-Fe coevaporated films has been studied. From measurements of the change of the optical transmittance, it is seen that the growth of pin holes is reduced considerably. However, the addition of Al also results in a decrease of the magnetic and magneto-optic properties of the Tb-Fe films such as the Curie temperature, the Kerr rotation, the perpendicular anisotropy, and the coercivity. These problems, however, are recovered easily by replacing part of the Fe by Co. This replacement also contributes to the improvement of the corrosion resistance. It has been shown that Tb-Fe-Co-Al films have a much better corrosion resistance than Tb-Fe or Tb-Fe-Co films, while having the same good magnetic and magneto-optic properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334910
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  • 2
    Electronic Resource
    Electronic Resource
    Ionic conductivity and mobility in network polymers from poly(propylene oxide) containing lithium perchlorate (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 123-128 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ionic conductivity σ and mobility μ in the amorphous network polymers from poly(propylene oxide) (PPO) containing lithium perchlorate (LiClO4) at the concentration of [LiClO4]/[PO unit]=0.042 and 0.076 were investigated by means of complex impedance and time-of-flight methods. The σ values of the PPO–LiClO4 complexes reached 10−5 S cm−1 at 70 °C. The temperature dependence of σ deviated from a single Arrhenius behavior above a critical temperature (−1 °C and 11 °C) which approximately corresponded to the glass transition temperature Tg. The μ values were relatively high and changed from 10−6 to 10−5 cm2 V−1 s−1 in the temperature range of 40–100 °C. The Nernst–Einstein equation correlated μ with the ionic diffusion coefficient D. The Williams–Landel–Ferry equation with C1(approximately-equal-to)5 and C2(approximately-equal-to)30–50 held with a temperature dependence of D in the order of 10−8–10−7 cm2 s−1. The change in the number of ionic carriers n with temperature obeyed the Arrhenius equation with the activation energy of 0.26 and 0.34 eV. The degree of dissociation for LiClO4 in the PPO networks was 1–6%, and the dissociation was facilitated in the low LiClO4 concentration complex. The temperature dependence of σ above Tg was interpreted quantitatively in terms of n and μ.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335386
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