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  • 1
    Electronic Resource
    Electronic Resource
    Complex magneto-optical Kerr rotation of Fe,FeCo/Cu multilayer films (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 3470-3474 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The complex magneto-optical Kerr rotation spectra of Fe/Cu and FeCo/Cu bilayers and compositionally modulated films (CMF) were studied experimentally and theoretically. In the bilayers, an enhancement of Kerr ellipticity εk by a factor of 5 was observed at long wavelength side, while the Kerr rotation θk can only be enhanced by a factor of 2 around the plasma edge of Cu. In the CMFs, εk was enhanced by 60% but no θk enhancement was observed. Theoretical analyses showed that both the magnitude of effective ε˜xye and the magnitude and signs of effective Ae and Be are important for magneto-optical enhancement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354523
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  • 2
    Electronic Resource
    Electronic Resource
    Thickness and substrate dependence of the magneto-optical Kerr effect of thin magnetic films : The 5th Joint MMM−Intermag Conference (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5858-5860 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Different thickness dependencies of the magneto-optical Kerr effect of the magnetic (Co, Ni, and Fe)/nonmagnetic (air, glass, Cu, and W) bilayer structures were studied experimentally and theoretically, showing the complicated influence of the dielectric constants of the underlying substrate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350136
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  • 3
    Electronic Resource
    Electronic Resource
    The magneto-optical Kerr effect of bilayer films Nd-Fe/Cu and Nd-Fe/Al : 35th annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 5992-5993 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Bilayers Nd-Fe/Cu and Nd-Fe/Al made by vacuum evaporation were studied. The magneto-optical Kerr effect (MOKE) and reflectivity spectra were measured. For Nd-Fe/Cu with low Nd content and small thickness of Nd-Fe layer there is a peak in the MOKE spectrum and a broad MOKE enhancement. The position is located near the plasma edge of Cu. When the content of Nd exceeds 37 at. %, there is no Kerr peak in the MOKE spectrum of Nd-Fe/Cu. When the thickness of the magnetic layer is larger but still less than the light penetration depth, the position of the peak moves towards the long-wavelength side. For Nd-Fe/Al there is a broad enhancement in the short-wavelength region, but no Kerr peak occurs no matter how the magnetic layer changes. The results presented show that the necessary conditions for MOKE enhancement in bilayers are suitable values of n and k of the reflector, whether the reflector has a plasma edge or not, and the enhancement also depends on the properties of the magnetic layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347788
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  • 4
    Electronic Resource
    Electronic Resource
    The magneto-optical Kerr effect of trilayer (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 3950-3954 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this paper the magneto-optical polar Kerr rotation spectra of trilayers Fe/Ag/Cu, Fe/Cu/Ag, Fe/Au/Cu, and Fe/Cu/Au were measured and calculated. The experimental results coincided well with the calculated results. It was found that for trilayers Fe/Cu/Ag and Fe/Ag/Cu, with a 100 A(ring) thickness of the top Fe layer, there were two Kerr rotation peaks in their rotational magneto-optical Kerr rotation spectra, located near 320 nm (the plasma edge of Ag) and 560 nm (the absorption edge of Cu). For Fe/Cu/Au and Fe/Au/Cu, with a 100 A(ring) thickness of the top Fe layer, there was only one Kerr rotation peak, which shifts slightly with the intermediate layer thickness. Trilayers Fe/Au/Cu and Fe/Cu/Au with suitable thickness of the top Fe layer are useful at present for magneto-optical storage with a read-out laser of long wavelength; Fe/Ag/Au and Fe/Cu/Ag will be useful in the future for magneto-optical storage with read-out laser of short wavelength.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350866
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  • 5
    Electronic Resource
    Electronic Resource
    The magneto-optical Kerr effect of bilayers Fe/Au-Cu and Fe/Ag-Au (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 1373-1375 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Bilayers Fe/Au-Cu and Fe/Ag-Au made by vacuum evaporation were studied. The magneto-optical polar Kerr rotation and reflectivity spectra were measured in the region from 400 to 700 nm. In the magneto-optical Kerr rotation spectra of bilayers Fe/Au-Cu and Fe/Ag-Au with the thickness of Fe layer less than the light penetration depth, there is a broad enhancement of the magneto-optical polar Kerr rotation with a Kerr peak near the plasma edge in the reflectivity spectra of Au-Cu and Ag-Au alloys. The peak shifts toward the long wavelength side with increasing Cu and Au content in Au-Cu and Ag-Au alloys, respectively. Our results show that the composition of the reflector in our bilayer structures can shift the wavelength range of the magneto-optical Kerr rotation enhancement. Interpretation and discussions are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351256
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  • 6
    Electronic Resource
    Electronic Resource
    Human barrier recovery after acute acetone perturbation: an irritant dermatitis model (1998)
    Oxford BSL : Blackwell Science Ltd
    Clinical and experimental dermatology 23 (1998), S. 0 
    Details
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The efficacy of a topical agent in barrier recovery was evaluated after acetone-induced acute water loss barrier disruption in vivo in humans. The upper back of several volunteers was rubbed with acetone-soaked cotton balls until elevated rates of transepidermal water loss (TEWL) occurred (〉20 g/m2h, or greater). The topical agent was then applied to the acetone-treated skin sites once daily for 5 days. Resolution evaluation used TEWL measurements and the data were expressed as the percentage recovery in water barrier function. In comparison with placebo control the topical agent significantly enhanced barrier recovery, especially within the first 72 h (P 〈 0.05). This model offers a simple method of examining chemicals accelerating (or inhibiting) repair of this form of acute skin damage in man.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2230.1998.00310.x
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  • 7
    Electronic Resource
    Electronic Resource
    Crystallization of sputtered amorphous oxide films (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 7075-7079 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Amorphous oxide films with a composition of Bi2DyFe5O12 have been prepared by rf sputtering technique. The crystallization process was investigated using x-ray diffraction, differential thermal analysis, magnetic properties, magnetic resonance spectra, magneto-optical Faraday spectra, Raman spectra, and infrared reflection spectra. Amorphous oxide films exhibit very small magnetization and Faraday rotation at room temperature. At about 600 °C amorphous films crystallize to a garnet phase. With crystallization the magnetization and Faraday rotation increase rapidly. Raman and infrared spectra studies show the presence of tetrahedral sites in the amorphous films. As the annealing temperature increases, the peaks corresponding to octahedral and dodecahedral sites occur successively. It is of interest to note that amorphous oxide films containing Fe3+ ions show no magnetic resonance spectra at 71 and 300 K. The films annealed above crystallization temperature show a normal resonance spectrum. With increasing annealing temperature the linewidth decreases rapidly and the effective magnetization and anisotropy constant increase. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361474
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  • 8
    Electronic Resource
    Electronic Resource
    Interlayer coupling and spin polarization of the nonmagnetic layers in Fe/Cu and Fe/Ag CMFs : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 6190-6192 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Compositionally modulated films (CMFs) of Fe/Cu and Fe/Ag, made by RF sputtering, were investigated with ferromagnetic resonance (FMR), nuclear magnetic resonance (NMR), and magneto-optical (MO) spectroscopy. Evidence of spin polarization of the nonmagnetic layers, related to the interlayer coupling, was obtained. Direct evidence of the penetration of an exchange field and the spin polarization of the conduction electrons in the nonmagnetic Cu layers was obtained in Fe/Cu CMFs by NMR. Spin-wave resonances were observed in Fe/Cu CMFs in FMR experiments, and the spin wave was found to be sustained by both the Fe and Cu sublayers. The MO spectra of Fe/Ag CMFs indicated that the conduction electrons of Ag are spin polarized and give an additional MO activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355452
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  • 9
    Electronic Resource
    Electronic Resource
    A study of interlayer coupling in Co/Cu multilayers (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 3971-3974 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Co(22 A(ring))/Cu multilayers with Cu thicknesses varying from 6 to 40 A(ring) are studied by vibrating-sample magnetometry and ferromagnetic-resonance spectroscopy (FMR). The magnetization was found to increase with decreasing Cu thickness, whereas the linewidth of the uniform mode of the FMR was found to decrease. This is attributed to the spin polarization of the Cu layers due to interlayer coupling and its effect on the lowered dimensionality of the Co layers. We also observed a peak on the high-field side of the uniform FMR mode, which we attribute to antiparallel coupling of adjacent ferromagnetic layers producing an "optical'' mode. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359561
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  • 10
    Electronic Resource
    Electronic Resource
    Concurrent variation of giant magnetoresistance and saturation Kerr rotation in NiCo/Cu multilayers (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 3371-3373 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The dependences of magneto-optical effect, effective optical constants, and giant magnetoresistance (GMR) on the thickness of Cu layers were investigated in NiCo/Cu multilayers prepared by rf magnetron sputtering. A peak of saturation polar Kerr rotation θK, occurred simultaneously with that of GMR ratio when the Cu thickness is around 1.0 nm, where a clear drop of the effective optical constants n and k appeared. The peak of θK is mainly caused by the reduction of the effective optical constants, which dominate over the small drop of the effective off-diagonal elements of the dielectric tensor. The concurrent variation of GMR and θK is related to antiferromagnetic interlayer coupling, which may change the electron band structure and thus the optical and magneto-optical transitions of electrons. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.121607
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