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  • 1
    Electronic Resource
    Electronic Resource
    Kerr effect from Pt/Co superlattices and the role of the magneto-optic activity of Pt (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 880-885 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magneto-optic response of Pt/Co superlattices is simulated to gain insight into the recent experimental findings of favorable information-storage characteristics. Major trends are reproduced qualitatively, and the calculations indicate that the Pt contributes significantly to the short-wavelength polar Kerr signal (at 4 eV). The influences of the wavelength, angle of incidence, component thicknesses, overcoat, and substrate on the rotation, ellipticity, and reflectivity are evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347327
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of Kerr rotation from Cu/Co, Pd/Co, and Pt/Co superlattices : 35th Annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 4559-4561 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Numerical simulations of the Kerr signals from Cu/Co, Pd/Co, and Pt/Co superlattices show, in general, a scaling of the signal with the amount of Co in the superlattice. Experimentally, however, the signal from Pt/Co superlattices at ∼4 eV is larger than that from bulk Co, despite the lesser total amount of Co. This is due to the magnetization induced in the Pt by the Co. Comparison of the Pd/Co and Pt/Co results with experiment indicates that the magnetization induced in the Pt by the Co plays a more important role in the magneto-optic activity than does the induced magnetization of Pd.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348309
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  • 3
    Electronic Resource
    Electronic Resource
    Fundamental magneto-optics (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 4203-4207 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The reflection-transmission problem is considered for light from a boundary between two magnetic media with arbitrary direction of the magnetization within each medium. Explicit formulas are derived for the magneto-optic coefficients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346209
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  • 4
    Electronic Resource
    Electronic Resource
    APS undulator radiation—first results : The 9th National conference on synchrotron radiation instrumentation (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 3348-3348 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The first undulator radiation has been extracted from the Advanced Photon Source (APS). The results from the characterization of this radiation are very satisfactory. With the undulator set at a gap of 15.8 mm (K=1.61), harmonics as high as the 17th were observed using a crystal spectrometer. The angular distribution of the third-harmonic radiation was measured, and the source was imaged using a zone plate to determine the particle beam emittance. The horizontal beam emittance was found to be 6.9±1.0 nm-rad, and the vertical emittance coupling was found to be less than 3%. The absolute spectral flux was measured over a wide range of photon energies, and it agrees remarkably well with the theoretical calculations based on the measured undulator magnetic field profile and the measured beam emittance. These results indicate that both the emittance of the electron beam and the undulator magnetic field quality exceed the original specifications. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147262
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  • 5
    Electronic Resource
    Electronic Resource
    A passive scheme for ID end correction : Proceedings of the 5th international conference on synchrotron radiation instrumentation (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 1943-1945 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A passive end correction scheme used on a prototype undulator is described. This scheme allows the integrated field requirements to be met at all gaps from 11.5 to 200 mm, with no active correction. The main parameters that need to be adjusted are the strength of the end magnets and the height of the next-to-last poles. The first field integral remains constant over the entire gap range, to within 25 G cm in the vertical direction and 50 G cm in the horizontal direction. The second field integral remains constant to within 10 000 G cm2. Results of magnetic measurements are presented. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146459
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  • 6
    Electronic Resource
    Electronic Resource
    End-field design and tuning methods for insertion devices : The 9th National conference on synchrotron radiation instrumentation (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 3347-3347 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The magnetic field distribution, gap-dependent steering, and integrated magnetic multipole moments of insertion devices installed in synchrotron radiation sources have stringent requirements for yielding high brightness without adversely perturbing the electron orbit. Correct termination of the ends of the device yields a large number of full-field poles and helps achieve gap-independent steering. End-field tuning methods used for the Advanced Photon Source insertion devices are reviewed. Techniques include magnet strength reduction, reduced height poles, magnetic shims, and pole shaping. Measurements show that two-imensional finite element analysis is a useful tool for predicting general field shape and trajectories. However, experimental entrance steering of different devices with identical end configurations shows variance, necessitating empirical fine tuning of each device. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147055
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  • 7
    Electronic Resource
    Electronic Resource
    Elementary formula for the magneto-optic Kerr effect from model superlattices (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 1214-1216 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An elementary formula is derived for the magneto-optic Kerr effect from model superlattices. An exact result is obtained for the case of equal refractive indices for the two constituents of the superlattice. Co/Pt is used as an example of such superlattices for wavelengths in the vicinity of 2 eV. First-order corrections in the difference of the refractive indices are derived which are suitable for treating a variety of materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104368
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  • 8
    Electronic Resource
    Electronic Resource
    Role of the substrate in enhancing the magneto-optic response of ultrathin films: Fe on Au (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 2687-2689 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Simulations are presented for the magneto-optic rotation and ellipticity as a function of Fe thickness in the 0–400 A(ring) range for the system Fe on Au (100). The results, which are based on tabulated bulk optical constants, agree with recent experiments and explicitly demonstrate the role of the Au underlayer in enhancing the signal from the ferromagnetic overlayer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102827
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  • 9
    Electronic Resource
    Electronic Resource
    Polar Kerr-effect observation of perpendicular surface anisotropy for ultrathin ferromagnetic films: fcc Fe/Cu(100) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5325-5327 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The theoretically predicted prependicular surface anisotropy of ultrathin ferromagnetic Fe films has been confirmed using the magneto-optical Kerr effect. Polar and longitudinal Kerr-effect measurements have been performed in situ on the same fcc Fe/Cu(100) films to study the dependence of the magnetic properties on film thickness and growth temperature conditions. Auxiliary LEED and Auger studies are used to characterize the structure and growth of the films. For films 1.2–5.9 monolayers (ML) thick grown at ∼100 K, for instance, square hysteresis-loop behavior in the polar Kerr effect confirmed the dominance of the perpendicular surface anisotropy. Examples are presented to document how the polar and longitudinal Kerr-effect signals evolve for films thicker than 6 ML due to the easy axis reorienting into the film plane. To differentiate between intrinsic temperature effects and those associated with interfacial compositional changes, the films were thermally cycled and their Kerr signals monitored. Films of thickness around 4 ML retained their characteristic polar Kerr-effect square loops despite thermal cycling between ∼100 and ∼400 K, while those 〈2 ML thick changed irreversibly. These studies confirm that intermixing can be limited to the monolayer range by low-temperature growth conditions, but the LEED results show that the degree of structural ordering of the films is reduced, as expected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342406
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  • 10
    Electronic Resource
    Electronic Resource
    Magnetic properties of novel epitaxial films (invited) (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 3729-3734 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The surface magneto-optic Kerr effect (SMOKE) is used to explore the magnetism of ultra thin Fe films extending into the monolayer regime. Both bcc α-Fe and fcc γ-Fe single-crystalline, multilayer films are prepared on the bulk-terminated (1×1) structures of Au(100) and Cu(100), respectively. The characterizations of epitaxy and growth mode are performed using low-energy electron diffraction and Auger electron spectroscopy. Monolayer range Fe/Au(100) is ferromagnetic with a lower Curie temperature than bulk α-Fe. The controversial γ-Fe/Cu(100) system exhibits a striking, metastable, surface magnetic phase at temperatures above room temperature, but does not exhibit bulk ferromagnetism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338673
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