Bonding and electronic structure in zirconia pseudopolymorphs investigated by electron energy-loss spectroscopy

1 September 1996

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 54 (10) , 7094-7102
https://doi.org/10.1103/physrevb.54.7094

Abstract

The use of electron energy-loss spectroscopy for characterization of zirconium oxide pseudopolymorphs is investigated. The results demonstrate that spectroscopic ‘‘fingerprints’’ for each phase can be identified and the technique can be utilized for phase identification. The oxygen K-edge spectra are analyzed in detail and the spectral features are interpreted within the context of the electronic structure of zirconia. Comparisons between theory and experiment reveal coincidences which can result in misleading interpretations of the energy-loss and x-ray absorption spectra. It is shown that the effect of dopant atoms and oxygen vacancies in stabilized zirconias must be considered in order to derive the correct interpretation of the spectra. © 1996 The American Physical Society.

Keywords

This publication has 23 references indexed in Scilit:

Experimental and theoretical determination of the electronic structure and optical properties of three phases of ${ZrO}_{2}$
Physical Review B, 1994
X-ray-absorption studies of zirconia polymorphs. II. Effect of $Y_{2}$ $O_{3}$ dopant on ${ZrO}_{2}$ structure
Physical Review B, 1993
Electron-energy-loss near-edge structures in the oxygenK-edge spectra of transition-metal oxides
Physical Review B, 1993
Electronic structure and atomic arrangement around Zr substituted for Y in $Y_{2}$ $O_{3}$
Physical Review B, 1991
Determination of optical constants of ZrO₂ and Zr by electron energy‐loss spectroscopy
Surface and Interface Analysis, 1990
Electronic structures of three phases of zirconium oxide
Physica B+C, 1988
Refractive index of cubic zirconia stabilized with yttria
Applied Optics, 1982
Oxygen $K$ near-edge fine structure: An electron-energy-loss investigation with comparisons to new theory for selected $3 d$ Transition-metal oxides
Physical Review B, 1982
Electronic Excitations in Some Transition Metals and Their Oxides. Characteristic Energy Loss Measurements up to 50 eV
Physica Status Solidi (b), 1980
X-ray diffraction study of Zr(Ca,Y)O2−x. I. The average structure
Acta Crystallographica Section A, 1979