Grain boundary defect chemistry of acceptor-doped titanates: Space charge layer width
Journal Article
·
· Journal of the American Ceramic Society
- Inst. fuer Werkstoffe der Elektrotechnik, Aachen (Germany)
The grain boundary space charge depletion layers in acceptor-doped SrTiO{sub 3} ceramics were investigated by impedance spectroscopy in the time and frequency domain. Based on the layer and its dependence on the acceptor concentration, the temperature, and the oxygen partial pressure during annealing, a suggestion for a refined Schottky model is proposed. The local distribution of the donor type grain boundary states causing the depletion layer and the resulting band bending are discussed.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 142257
- Journal Information:
- Journal of the American Ceramic Society, Vol. 77, Issue 1; Other Information: PBD: Jan 1994
- Country of Publication:
- United States
- Language:
- English
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