Photoinduced changes of the concentration of paramagnetic and optical defects have been investigated in cubic stabilized zirconia single crystals by means of electron paramagnetic resonance (EPR). Results are reported confirming the presence of photobleaching of the optical and EPR (Formula presented) electron centers (T centers) in x-ray-irradiated crystals, but showing at the same time the photoproduction of (Formula presented) hole centers. These data bring evidence of the complex mechanism of (Formula presented)-(Formula presented) annihilation, allowing a possible interpretation of the process. © 1996 The American Physical Society.
Azzoni, C., Paleari, A. (1996). Photoactivation of hole centers in cubic stabilized zirconia. PHYSICAL REVIEW. B, CONDENSED MATTER, 53(1), 5-8 [10.1103/PhysRevB.53.5].
Photoactivation of hole centers in cubic stabilized zirconia
PALEARI, ALBERTO MARIA FELICE
1996
Abstract
Photoinduced changes of the concentration of paramagnetic and optical defects have been investigated in cubic stabilized zirconia single crystals by means of electron paramagnetic resonance (EPR). Results are reported confirming the presence of photobleaching of the optical and EPR (Formula presented) electron centers (T centers) in x-ray-irradiated crystals, but showing at the same time the photoproduction of (Formula presented) hole centers. These data bring evidence of the complex mechanism of (Formula presented)-(Formula presented) annihilation, allowing a possible interpretation of the process. © 1996 The American Physical Society.
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