Please use this identifier to cite or link to this item: https://doi.org/5/055901
Title: Effect of manganese doping on the size effect of lead zirconate titanate thin films and the extrinsic nature of 'dead layers'
Authors: Lou, X.J. 
Wang, J. 
Issue Date: 2010
Source: Lou, X.J.,Wang, J. (2010). Effect of manganese doping on the size effect of lead zirconate titanate thin films and the extrinsic nature of 'dead layers'. Journal of Physics Condensed Matter 22 (5) : -. ScholarBank@NUS Repository. https://doi.org/5/055901
Abstract: We have investigated the size effect in lead zirconate titanate (PZT) thin films with a range of manganese (Mn) doping concentrations. We found that the dynamic size effect in the conventional Pt/PZT/Pt thin-film capacitors could be systematically reduced and almost completely eliminated by increasing Mn doping concentration. The interfacial layer at the electrode-film interface appears to disappear almost entirely for the PZT films with ∼2% Mn doping levels, confirmed by the fits using the conventional 'in-series capacitor' model. Our work indicates that the dynamic size effect in ferroelectrics is extrinsic in nature, supporting the work by Saad et al. Other implications of our results have also been discussed. By comparing a variety of experimental studies in the literature we propose a scenario that the 'dead layer' between PZT (or barium strontium titanate, BST) and metal electrodes such as Pt and Au might have a defective pyrochlore/fluorite-like structure (possibly with a small portion of ferroelectric perovskite phase). This scenario is then generalized by including the effect of the grain-boundary dead layer on the collapse of the dielectric constant in thinner films. © 2010 IOP Publishing Ltd.
Source Title: Journal of Physics Condensed Matter
URI: http://scholarbank.nus.edu.sg/handle/10635/64852
ISSN: 09538984
DOI: 5/055901
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

19
checked on Dec 8, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.