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Browse Journals & Magazines > Applied Physics Letters ...> Volume:90 Issue:19 Help

Polarization switching and fatigue in Pb(Zr0.52Ti0.48)O3 films sandwiched by oxide electrodes with different carrier types

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5 Author(s)
Chen, Feng ; Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China ; Liu, Q.Z. ; Wang, H.F. ; Zhang, F.H.
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By using highly conductive p-type La0.7Sr0.3MnO3 (LSMO) and n-type La0.07Sr0.93SnO3 (LSSO) as electrodes, all-oxide Pb(Zr0.52Ti0.48)O3 (PZT) capacitors, LSMO/PZT/LSMO, LSSO/PZT/LSSO, LSSO/PZT/LSMO, and LSMO/PZT/LSSO, have been grown epitaxially on (001)SrTiO3 substrates, and their structure, switching, fatigue, and optical properties were investigated. Strikingly, contrary to the LSMO/PZT/LSMO capacitors, those having the n-type electrode show poor fatigue resistance especially at lower driving frequencies, which was further confirmed by using another n-type oxide electrode, SrTi0.9Sb0.1O3. The results suggest that with a depletion layer at the PZT/LSSO interface, charge accumulation and injection during switching may be responsible for the fatigue.

Published in:
Applied Physics Letters  (Volume:90 ,  Issue: 19 )

Date of Publication: May 2007

Page(s):
192907 - 192907-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2737912
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
May 2007

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