Journal Article

PreJuSER-44470

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Enhancement of p-type conductivity in nanocrystalline BaTiO3 Ceramics

Guo, X.FZJ* ; Pithan, C.FZJ* ; Ohly, C. ; Jia, C.-L.FZJ* ; Dornseiffer, J.FZJ* ; Haegel, F.-H.FZJ* ; Waser, R.FZJ*

2005
American Institute of Physics Melville, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/1088  doi:10.1063/1.1864232

Abstract: Undoped BaTiO3 ceramic samples with an average grain size of similar to 35 nm were prepared and the electrical properties investigated. The defect structure is dominated by acceptor impurities; therefore, the conductivity of nanocrystalline BaTiO3 is of p-type. Comparing with microcrystalline BaTiO3, the conductivity of nanocrystalline BaTiO3 is about 1 to 2 orders of magnitude higher and the activation energy remarkably lower, which is ascribed to a greatly reduced oxidation enthalpy in nanocrystalline BaTiO3 (similar to 0.3 versus similar to 0.92 eV for microcrystalline BaTiO3). (c) 2005 American Institute of Physics.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Troposphäre (ICG-II)
2. Elektronische Materialien (IFF-IEM)
3. Mikrostrukturforschung (IFF-IMF)
4. Sedimentäre Systeme (ICG-V)

Research Program(s):

1. Kondensierte Materie (M02)
2. Chemie und Dynamik der Geo-Biosphäre (U01)

Appears in the scientific report 2005
Notes: This version is available at the following Publisher URL: http://apl.aip.org

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