Study of oxygen vacancies in ceramics by perturbed angular correlation spectroscopy

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1990.tb06440.x· OSTI ID:5156756

Su, H T; Wang, R; Fuchs, H; Gardner, J A ^[1]; Evenson, W E ^[2]; Sommers, J A ^[3]

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1. Dept. of Physics, Oregon State Univ., Corvallis, OR (US)
2. Dept. of Physics, Brigham Young Univ., Provo, VT (US)
3. Teledyne Wah Chang, Inc., Albany, OR (US)

This paper describes perturbed angular correlation (PAC) measurements in tetragonal and cubic zirconia and in ceria. A physically reasonable and self-consistent interpretation of these data implies that oxygen vacancies are trapped at a second-neighbor position by Cd in tetragonal zirconia and by In in ceria. For Cd in tetragonal zirconia, the vacancy trap energy is found to be 0.44 eV, and the energy barrier between adjacent trap sites is approximately 0.8 eV. The activation energy of an oxygen vacancy hopping between trap sites around {sup 111}Cd in ceria is found to be 0.55 eV. The activation energy for oxygen vacancy hopping in cubic zirconia, as detected by {sup 181}Ta PAC, is about 1.0 eV and independent of the Y concentration.

• OSTI ID: 5156756
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 73:11; ISSN JACTA; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ANGULAR CORRELATION
CADMIUM 111
CADMIUM ISOTOPES
CERAMICS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
CORRELATIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTS
EVEN-ODD NUCLEI
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
METALS
MINUTES LIVING RADIOISOTOPES
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PERTURBED ANGULAR CORRELATION
POINT DEFECTS
RADIOISOTOPES
RARE EARTH COMPOUNDS
SPECTROSCOPY
STABLE ISOTOPES
TANTALUM 181
TANTALUM ISOTOPES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VACANCIES
YTTRIUM
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES