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  • 1990-1994  (9)
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  • 1
    Electronic Resource
    Electronic Resource
    Ferromagnetic resonance in Ag coupled Ni films : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 6341-6343 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present an X-band ferromagnetic resonance (FMR) study of polycrystalline single Ni films and of two Ni layers separated by an Ag layer at room temperature. Films were deposited by sputtering on glass using Ag over- and underlays. The single Ni films have a FMR mode with a dependence of the resonance field on the angle α between the magnetic field and the plane in good agreement with theory. In samples with two Ni films coupled through an intervenient Ag layer, only one FMR mode is observed if the two Ni have identical thicknesses. When the films have different thicknesses a second weak resonance appears. The field difference between the two modes is a measure of the coupling between the Ni films. Results were obtained for a series of samples with the Ag thickness varying in the range 10≤t≤30 A(ring). Surprisingly, the two modes have opposite behavior with the variation of α, for all values of t. The results suggest that the coupling is antiferromagnetic when the field is parallel to the film plane and ferromagnetic when perpendicular, regardless of t.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.352642
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Growth kinetics of solid-state-reacted Fe-Zr multilayer films (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 4870-4876 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Multilayers of Fe0.33Zr0.67, prepared by electron beam evaporation, have been characterized by conversion electron Mössbauer spectroscopy, Rutherford backscattering spectroscopy, and x-ray diffraction. Two phases, one amorphous and another crystalline (FeZr3), occur by solid-state reaction. For temperatures of 350 and 500 °C and annealing times ranging from 10 min to 72 h the growth rates of both phases had been obtained. From these results we suggest a model to describe the phase growth kinetics of the amorphous-crystalline Fe0.33Zr0.67 multilayer thin film.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349029
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Epitaxial Fe/Cu superlattices on Si(111) (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 5682-5686 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report on the successful epitaxial growth of Fe/Cu superlattices on Si(111) wafers at room temperature. The superlattices were characterized with x-ray diffraction, conversion electron Mössbauer spectrometry, and selected area electron diffraction experiments. The epitaxial growth is crucially dependent on which element is deposited first on the bare Si(111).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351918
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The evolution of sputtered iron nitride thin films under thermal treatment (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 261-267 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The thermal evolution of reactively sputtered iron nitride thin films has been investigated by x-ray diffraction, Mössbauer conversion electron spectroscopy, transmission electron microscopy, and magnetic measurements. The results show that, independently of the original nitrogen content of the films, a similar composition of the end products after the 500 °C annealings is reached, being all composed of α-Fe plus γ'-Fe4N in a wide range of relative proportions. The magnetic characteristics, however, are different depending on the nitrogen content of the as-deposited films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347761
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  • 5
    Electronic Resource
    Electronic Resource
    Composition and magnetic properties of Fe/Fe x N thin film multilayers (1992)
    Springer
    Applied physics 54 (1992), S. 437-441 
    Details
    ISSN: 1432-0630
    Keywords: 68.50 ; 75.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The structure, composition, and magnetic characteristics of thin films multilayers of iron-iron nitride with high magnetic moment and very low coercive field are investigated. The present study together with previous ones that described in detail the magnetic properties lead to the establishment of certain requirements to obtain iron-iron nitride multilayers with outstanding magnetic characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324168
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  • 6
    Electronic Resource
    Electronic Resource
    The formation of intermetallic phases by solid-phase reaction of Fe/Al multilayers (1993)
    Springer
    Applied physics 56 (1993), S. 113-118 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 64.00 ; 73.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Thin film multilayers of Fe and Al with thicknesses ranging from 10 nm/2 nm to 10 nm/420 nm Fe/Al are used as starting structures to produce intermetallic phases by solid-phase reaction during high-vacuum thermal annealings. By measuring the relative concentrations of the reacting Fe and Al species nearby the growing interfaces and using the recently introduced concept of effective heat of mixing of binary thin-film metallic systems, a method is suggested to predict the phases to be obtained from different combinations of initial multilayer thickness and annealing temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00517676
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  • 7
    Electronic Resource
    Electronic Resource
    Solid state amorphization reaction in Fe−Zr multilayers (1991)
    Springer
    Hyperfine interactions 67 (1991), S. 665-669 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The solid state reaction of thin multilayered Fe−Zr films has been studied by means of Conversion Electron Mössbauer Spectroscopy and Rutherford Backscattering. The results for the samples with the overall composition Fe0.67Zr0.33, Fe0.50Zr0.50 and Fe0.33Zr0.67 reveal the formation of an amorphous phase. The growth of this phase and the crystallization of the intermetallic compound FeZr3 for the rich zirconium sample are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02398216
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  • 8
    Electronic Resource
    Electronic Resource
    Thermal evolution and aging of Co-sputtered iron-tin thin films (1991)
    Springer
    Hyperfine interactions 67 (1991), S. 493-499 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The composition, structure, magnetic properties and stability of iron-tin thin films produced by co-evaporation with de magnetron sputtering are studied. Rutherford backscattering. Auger electron spectroscopy. X-ray diffraction and conversion electron Mössbauer spectroscopy indicate the formation of a homogeneous solid solution of tin in iron with a concentration well above the limit of equilibrium solid solubility. Measurements with a vibrating-sample magnetometer show that the films present saturation magnetization and remanence similar to those of pure iron, but a much smaller coercivity. Thermal treatment or aging lead to second-phase precipitation, which is accompanied by a growth of coercivity and remanence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02398190
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  • 9
    Electronic Resource
    Electronic Resource
    Solid state reaction crystallization and amorphization on thin film Fe-Zr multilayers (1994)
    Springer
    Hyperfine interactions 83 (1994), S. 333-339 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We study in this paper the thin multilayered film of the system Fe x Zr1-x using conversion electron Mössbauer spectroscopy (CEMS) as well as Rutherford backscattering spectroscopy (RBS). The solid state reaction (SSR) at 500°C for thex=0.33 andx=0.67 concentrations produces crystalline and amorphous phases. For the concentrationx=0.50 only an amorphous phase is obtained. For reactions at 700°C, besides Fe-Zr phases, another one is observed in the CEMS spectrum. This phase may be associated with some FeSi compound since the RBS profile shows the presence of Si at the surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02074295
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