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Browse Journals & Magazines > Journal of Applied Physics ...> Volume:104 Issue:11 Help

The influence of the top-contact metal on the ferroelectric properties of epitaxial ferroelectric Pb(Zr0.2Ti0.8)O3 thin films

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4 Author(s)
Pintilie, Lucian ; Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120, Halle (Saale), Germany ; Vrejoiu, Ionela ; Hesse, Dietrich ; Alexe, Marin

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Electrical properties, i.e., dielectric hysteresis and leakage current, of epitaxial Pb(Zr0.2Ti0.8)O3 films with bottom SrRuO3 electrode and different metals as top contact were investigated. The leakage current is largely insensitive to the work function of the top metal but increases with decreasing electronegativity as well as with decreasing number of electrons on the d-shell of the top metal. The best rectifying properties are obtained for metals with complete d-shell (Cu, Au, Ag, Pd), while the metals with few electrons on the d-shell (Ta, Cr) form Ohmic-like contacts.

Published in:
Journal of Applied Physics  (Volume:104 ,  Issue: 11 )

Date of Publication: Dec 2008

Page(s):
114101 - 114101-6
ISSN :
0021-8979
Digital Object Identifier :
10.1063/1.3021293
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Dec 2008

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