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    Characterization of magneto-optical recording media

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    azu_td_9225191_sip1_c.pdf
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    Author
    Hajjar, Roger Antoine
    Issue Date
    1992
    Keywords
    Dissertations, Academic.
    Optics.
    Electrical engineering.
    Advisor
    Mansuripur, Masud
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    This dissertation discusses the optical, magnetic and transport properties of magneto-optical recording media. The various custom-made and off-the-shelf instrumentation used in this study include: a Vibrating Sample Magnetometer (VSM), a modified polarization microscope, a polar Kerr effect loop tracer, a variable angle of incidence ellipsometer, and magnetoresistance/Hall effect/resistivity probes. Most of the samples studied were analyzed for determination of their composition and thickness by Rutherford Back Scattering (RPS) and X-Ray Fluorescence (XRF). The samples investigated were manufactured in several industrial and academic laboratories under different deposition conditions. The optical properties measured include Kerr rotation angle and ellipticity, Fresnel reflectivity coefficients, and calculation of the dielectric tensor. The magnetic properties include measurements of saturation magnetization, coercivity, anisotropy field, calculations of exchange energy parameters, domain wall, and anisotropy energy densities from experimental observations. The transport properties include measurements of magnetoresistance and Hall effect with three different geometries and calculation of the resistivity tensor. The modeling work consisted of modeling the optical path for various instruments, the current distribution in magnetic films, and the calculation of the demagnetizing energy using the fast Fourier transform technique.
    Type
    text
    Dissertation-Reproduction (electronic)
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Optical Sciences
    Graduate College
    Degree Grantor
    University of Arizona
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    Dissertations

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