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  • 1
    Electronic Resource
    Electronic Resource
    The Aims of EPS (1997)
    Springer
    Europhysics news 28 (1997), S. 37-37 
    Details
    ISSN: 1432-1092
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00770-997-0037-1
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  • 2
    Electronic Resource
    Electronic Resource
    Superfluid 3He Vortices may Simulate Cosmic Strings (1997)
    Springer
    Europhysics news 28 (1997), S. 73-73 
    Details
    ISSN: 1432-1092
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00770-997-0073-x
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  • 3
    Electronic Resource
    Electronic Resource
    Applications of Physics in Industry: the example of IABG, Ottobrunn (1997)
    Springer
    Europhysics news 28 (1997), S. 95-99 
    Details
    ISSN: 1432-1092
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00770-997-0095-4
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  • 4
    Electronic Resource
    Electronic Resource
    Magnetism and structure of ultrathin fcc FexCo1−x films on Cu(001) (abstract) : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 5618-5618 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ultrathin films of 3d-transition metal alloys, and in particular FeCo alloys, currently receive considerable interest because of their potential technological application and the possibility to adjust magnetic properties via the variation of composition and structure. To study magnetic and structural properties of the otherwise unstable fcc phase of FeCo, this structural phase was stabilized by epitaxial growth on Cu(001). Ultrathin FexCo1−x films were deposited at room temperature by coevaporation from two separate Knudsen cells, operated under stabilized conditions. The film thickness was varied between 2 and 9 monolayers (ML) and the Fe concentration between x=0.2 and x=0.95. The growth process was monitored by medium energy electron diffraction (MEED). Auger electron spectroscopy and low energy electron diffraction (LEED) were employed to analyze the composition and structure of the films. A nearly perfect layer-by-layer growth up to at least 9 ML, as seen by MEED, is encountered for x≤0.7. For higher Fe concentrations and thicknesses greater than 4 ML, deviations from the layer-by-layer growth are observed, indicating a structural rearrangement. LEED-I(V) curves reveal the coexistence of two structural phases with different interlayer spacings, the relative amount of which depends on the composition. Magnetic properties were characterized by the magneto-optical Kerr effect (MOKE). The remanent magnetization was found to lie within the film plane over the whole range of thicknesses and concentrations investigated.A linear increase of the Kerr signal at saturation magnetization with increasing thickness indicates that practically the whole film is magnetic. As a function of composition, the saturation Kerr signal develops continuously with increasing Fe content. This suggests that in fcc FeCo alloys the contribution of Fe and Co to the total magnetic moment is nearly constant over the whole compositional range. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362260
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  • 5
    Electronic Resource
    Electronic Resource
    Magnetic dichroism study of the relativistic electronic structure of perpendicularly magnetized Ni/Cu(001) : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 6426-6428 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An experimental and theoretical study of magnetic circular dichroism in valence band photoemission from 15 monolayer thick fcc Ni films on Cu(001) is presented. A highly symmetric configuration (light incidence, electron emission, magnetization direction, photon helicity, and surface normal all parallel) allows the illustrative interpretation of the dichroism in terms of the relativistic band structure. Photoemission experiments in the photon energy range of 11–27 eV are compared to fully relativistic one-step photoemission calculations. From this comparison, the dichroic features can be directly related to the double group symmetry of the initial states, which is demonstrated by two examples. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361959
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  • 6
    Electronic Resource
    Electronic Resource
    Magnetic spectromicroscopy and microspectroscopy with submicrometer resolution (abstract) : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 5020-5020 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Conventional techniques of magnetic domain imaging are usually not selective with respect to the chemical species in a system under investigation. This limitation can be overcome by employing soft x-ray magnetic dichroism which combines both magnetic sensitivity and chemical selectivity. We present first results on magnetic domain imaging at surfaces obtained with a newly developed photoelectron emission microscope using magnetic circular dichroism (MCD). Topographic studies on a silicon surface showed the instrument to be capable of a lateral resolution of better than 50 nm. Two approaches of separating chemical and magnetic information are demonstrated for Permalloy micropatterns on silicon. First, the lateral distribution of the different chemical species or the magnetic domains is obtained by subtracting images taken at different photon energies (spectromicroscopy). Second, a "small spot" mode permits the acquisition of x-ray absorption spectra from surface areas of less than 2 μm diameter. The latter technique is called microspectroscopy. On a Fe(100) whisker surface we observed magnetic domains with domain boundaries ∼300 nm wide. This value corresponds to the intrinsic width of a 180° domain wall at the surface, as determined by scanning electron microscopy with spin polarization analysis.1 The studies in Ref. 1 have also shown that this kind of domain wall behaves Neél-like at the surface, i.e., the magnetization vector M rotates within the film plane over the domain boundary. Exploiting the directional characteristics of MCD we can map the component of M normal to the domain boundary and thus selectively image the wall itself. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364495
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  • 7
    Electronic Resource
    Electronic Resource
    Magnetic dichroism in angle-resolved UV photoemission from valence bands, using linearly polarized light : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 6504-6506 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic dichroism measurements of the valence bands of films of fcc Co/Cu (001) have been performed using angle-resolved UV photoemission in low-symmetry, off-normal emission geometries, and linearly polarized light. Asymmetries of magnitude 4% are observed upon magnetization reversal. Evidence of both spin-dependent surface transmission and magnetic dichroism in the angular distribution of photoelectrons is seen. The asymmetry spectra indicate sensitivity to both magnetic exchange splitting and to spin–orbit splitting. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361984
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  • 8
    Electronic Resource
    Electronic Resource
    High dielectric constant and tunability of epitaxial SrTiO3 thin film capacitors (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 7362-7369 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The dielectric and insulating properties of epitaxial SrTiO3(STO) thin film capacitors were studied. The films were grown by inverted cylindrical magnetron sputtering in the radio frequency mode on (100) STO substrates which were covered with a (001)-oriented YBa2Cu3O7−x (YBCO) layer as a ground electrode. As a top electrode we used YBCO or Au thin films. A high dielectric constant, ε, of up to 5000 was observed at T=80 K. The capacitors revealed a large tunability, i.e., a nonlinear ε(E) dependence, with respect to voltage biasing. By applying 3 V, ε decreased to 1000 which was 20% of its maximum value. The frequency dependence of ε, the temperature dependence of the dielectric loss factor, tan δ, and the direct currency conductivity reflected that variable range hopping via localized states was present and dominated the conduction process in the STO films at low temperatures. The field strength for the electrical breakdown amounted to 300 kV/cm even for rather thin films with a thickness of about 40 nm. Below T=90 K, the STO films were ferroelectric with a high polarization of up to 30 μC/cm2 at T=4.2 K. The ferroelectric phase transition was found to be of second order and of the displacive type. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.369363
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  • 9
    Electronic Resource
    Electronic Resource
    Tailoring of high-Tc Josephson junctions by doping their electrodes (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 850-852 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Appropriate doping of the electrodes of high-Tc Josephson junctions provides a means to systematically adjust the junctions' electronic properties. This is demonstrated for the exemplary case of grain boundary junctions in bicrystalline Ca-doped YBa2Cu3O7−δ films. It is found that the critical current density is strongly increased and the normal state resistivity significantly reduced in comparison with the values obtained for equivalent junctions in undoped films. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.124534
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  • 10
    Electronic Resource
    Electronic Resource
    High Resolution Still Video Camera for Industrial Photogrammetry (1995)
    Oxford UK and Boston, USA : Blackwell Publishers Ltd.
    The @photogrammetric record 15 (1995), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Still video cameras are easy to handle, portable, digital image acquisition devices for close range photogrammetry. They allow fast object recording without being connected to a computer. As an example of the new camera type, the high resolution Kodak DCS200 is presented in this paper, combined with the DPA digital photogrammetric station used for image measurement and object reconstruction. The performance of this three dimensional measurement system is illustrated by calibration results as well as applications to high precision dimensional inspection in industry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/0031-868X.00013
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