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Filtering by: Subject Oxide ceramics Remove constraint Subject: Oxide ceramics Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Perturbed angular correlation spectroscopy of oxide ceramics at high temperature

    Creator:
    Su, Han-tzong
    Abstract:
    Perturbed angular correlation (PAC) spectroscopy of dilute zirconia alloys and YBa₂Cu₃0₇₋x, ceramic superconductors at elevated temperature have been measured using ¹¹¹Cd as the probe. The oxygen vacancy concentration in the zirconia samples was controlled by doping with yttrium or indium, which introduce vacancies, or with niobium, which removes vacancies. A...
    Resource Type:
    Dissertation
    Full Text:
    Perturbed angular correlation spectroscopy of oxide

  • The dynamics of oxygen vacancies in zirconia : an analysis Of PAC data

    Creator:
    Alves, Mauro A.
    Abstract:
    Nuclear techniques such as perturbed angular correlation (PAC) sample the hyperfine interactions of a large number of probe atoms in specific crystallographic sites. Real crystals contain static defects producing a distribution of electric field gradients (EFGs) that add to the ideal EFG of the crystal at any given probe site....
    Resource Type:
    Dissertation
    Full Text:
    ceramic devices with this material. In order to suppress this phase transition, dopants are added so that