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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:: first 'y ray, 'Yi of the cascade decay, and a detector at an arbitrary position. The direction of

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:: spectrometer 50 3.1.1. Gamma-ray detectors 53 3.1.2. Coincidence electronics 55 3.1.3. Encoding/routing

Design and architecture of an improved microcomputer-controlled perturbed angular correlation spectrometer

Creator:: Stevens, Darren W.
Resource Type:: Masters Thesis
Full Text:: the stop window set on the 53 low energy stop gamma ray peak 5.3. Typical 180° raw data for a sector

A microscopic study of the interaction between aliovalent dopants and native defects in group IV oxides : indium and cadmium in ceria and zirconia

Creator:: Zacate, Matthew O.
Abstract:: In order to understand better the defect structure and dynamics associated with lower valent dopants complexed with native defects in group IV oxides, In/Cd perturbed angular correlation spectroscopy was performed in ceria and zirconia. Examining the orientation symmetry axis of defects in ceria single crystals at low temperature has allowed...
Resource Type:: Dissertation
Full Text:: PAC 52 3.2 -y-RAY EMISSION 56 3.3 NUCLEAR ALIGNMENT THROUGH ANGULAR CORRELATION . 63 3.4

Indium donor/metal vacancy defect complexes in Cadmium Telluride studied with Perturbed Angular Correlation Spectroscopy

Creator:: Griffith, John W.
Abstract:: Semi-insulating, powder samples of Cadmium Telluride (CdTe) have been studied using ¹¹¹In Time Differential Perturbed Angular Correlation (PAC) Spectroscopy. The samples have been lightly doped (~10¹² cm⁻³) with ¹¹¹In atoms, which occupy well-defined metal (Cd) lattice sites and act as probes of the local environment. These substitutional donors form a...
Resource Type:: Dissertation
Full Text:: , emitting two gamma rays, 7i and 72 The first ganlina ray establishes a quantization axis against which the

Perturbed angular correlation spectroscopy of defects in Ceria

Creator:: Wang, Ruiping
Resource Type:: Dissertation
Full Text:: process 49 4.1 Spectra of undoped ceria synthesized in PAC furnace 55 4.2 Room temperature X-ray

The problem of aftereffects in perturbed angular correlation studies of ceria

Creator:: Dundon, Lisa
Abstract:: Perturbed Angular Correlations (PAC) spectroscopy is an effective local probe technique often employed in the characterization of defects or phase transitions in any of a variety of materials. This technique relies upon the ability of probe nuclei to function as gauges of the magnetic fields and electric field gradients local...
Resource Type:: Masters Thesis
Full Text:: creation of a photon (x-ray) or the ejection of an outer shell electron into the continuum. The latter is

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:: . Coincidence Electronics 3.1.2. Operating Software 3.1.3. Spectrometer Calibration 3.1.4. Gamma-Ray

Perturbed angular correlation measurements of hyperfine fields in liquid and amorphous selenium-tellurium alloys

Creator:: Gaskill, D. Kurt
Resource Type:: Dissertation

NMR study of GaAs at high temperature

Creator:: Han, Weimin, 1960-
Resource Type:: Dissertation
Full Text:: fcc unit cube. The cube illustrated in Fig 1 contains four GaAs molecules in a volume A3. A x-ray

ScholarsArchive@OSU

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

Perturbed angular correlation spectroscopy of oxide ceramics at high temperature

Design and architecture of an improved microcomputer-controlled perturbed angular correlation spectrometer

A microscopic study of the interaction between aliovalent dopants and native defects in group IV oxides : indium and cadmium in ceria and zirconia

Indium donor/metal vacancy defect complexes in Cadmium Telluride studied with Perturbed Angular Correlation Spectroscopy

Perturbed angular correlation spectroscopy of defects in Ceria

The problem of aftereffects in perturbed angular correlation studies of ceria

Perturbed angular correlation investigation of cubic zirconia

Perturbed angular correlation measurements of hyperfine fields in liquid and amorphous selenium-tellurium alloys

NMR study of GaAs at high temperature

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