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Filtering by: Creator Pascoe, S. Remove constraint Creator: Pascoe, S. Advisor Gardner, John A. Remove constraint Advisor: Gardner, John A.

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  • Factors influencing the crystallization, phase and oxygen vacancy concentration in zirconia

    Creator:
    Karapetrova, Euguenia
    Abstract:
    In order to achieve a better understanding of the processes that occur during formation and sintering of zirconia, various chemical and physical techniques were used. Along with Perturbation Angular Correlation spectroscopy, that allowed us to investigate microscopic properties inside the nanometer-size zirconia grains, such techniques as Scanning Electron Microscopy and...
    Resource Type:
    Masters Thesis
    Full Text:
    Physics Department and U. S. Department of Energy under contract number DE-FG06-85ER45191 is gratefully

  • Perturbed angular correlation investigation of cubic zirconia

    Creator:
    Fuchs, Heinz D.
    Abstract:
    Perturbed angular correlation (PAC) spectra of fully yttria-stabilized (cubic) zirconia with Y₂0₃ contents of 35.4 wt. %, 27.8 wt. %, and 16.9 wt. %, respectively, were measured using the isotope ¹⁸¹Ta as probe nucleus. PAC spectra in cubic zirconia are characterized by a wide frequency distribution due to contributions of...
    Resource Type:
    Masters Thesis
    Full Text:
    the differences of the energy eigenvalues in (2-57) 1E3/2 - E1/2 I col = = 2-s,/§a0),Q sin[i- cos-113

  • Perturbed angular correlation investigation of zirconia ceramics

    Creator:
    Jaeger, Herbert, 1956-
    Resource Type:
    Dissertation
    Full Text:
    2+ , Mg 2+ ) introduced, but only one vacancy for every two three-valent cations (e.g. Y3 +)) s

  • 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:
    Philosophy in Physics presented on June 7, 1989 . Title : P t" An orrelation 11s 110 f Oxi r s at Hi .h