Field enhanced bulk conductivity of acceptor-doped BaTi1−xCaxO3−x ceramics
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
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INVESTIGACIONMetadata
Title
Field enhanced bulk conductivity of acceptor-doped BaTi1−xCaxO3−x ceramicsAuthor (s)
Date
2010Publisher
American Institute of PhysicsISSN
0003-6951Type
info:eu-repo/semantics/articlePublisher version
https://aip.scitation.org/doi/10.1063/1.3476355Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
The electrical properties of Ca-doped BaTiO3 are very different when Ca substitutes onto Ba or Ti sites. The p-type semiconductivity of Ti-substituted ceramics increases reversibly by one to two orders of magnitude ... [+]
The electrical properties of Ca-doped BaTiO3 are very different when Ca substitutes onto Ba or Ti sites. The p-type semiconductivity of Ti-substituted ceramics increases reversibly by one to two orders of magnitude under a dc-bias voltage of 100 V cm−1, whereas Ba-substituted ceramics show little sensitivity to a dc bias. This increase in BaTi1−xCaxO3−x, studied over the temperature range 150–600 °C, is independent of electrode material and atmosphere and is attributed to ionization of underbonded O2− ions adjacent to acceptor-doped Ca2+ ions. [-]
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Applied Physics Letters, vol. 97, no. 6 (2010)Rights
© American Institute of Physics
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- QUIO_Articles [701]