Field enhanced bulk conductivity of acceptor-doped BaTi1−xCaxO3−x ceramics
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Otros documentos de la autoría: Masó, Nahum; Prades Tena, Marta; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Sinclair, Derek C.; West, Anthony R.
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
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Título
Field enhanced bulk conductivity of acceptor-doped BaTi1−xCaxO3−x ceramicsAutoría
Fecha de publicación
2010Editor
American Institute of PhysicsISSN
0003-6951Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://aip.scitation.org/doi/10.1063/1.3476355Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
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)Derechos de acceso
© American Institute of Physics
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