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Interface-charge-coupled polarization response model of Pt-BaTiO3-ZnO-Pt heterojunctions: Physical parameters variation

Published online by Cambridge University Press:  01 February 2011

Venkata Voora ,
Tino Hofmann ,
Ann Kjerstad ,
Matthias Brandt ,
Michael Lorenz ,
Marius Grundmann  and
Mathias Schubert
Venkata Voora
Affiliation:
vvoora1@bigred.unl.edu, University of Nebraska-Lincoln, Department of Electrical Engineering, 209 N WSEC, UNL, Lincoln, NE, 68588, United States
Tino Hofmann
Affiliation:
thofmann@engr.unl.edu, University of Nebraska-Lincoln, Department of Electrical Engineering, Lincoln, NE, 68588, United States
Ann Kjerstad
Affiliation:
ann.kjerstad@gmail.com, University of Nebraska-Lincoln, Department of Electrical Engineering, Lincoln, NE, 68588, United States
Matthias Brandt
Affiliation:
m_brandt@uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Leipzig, N/A, Germany
Michael Lorenz
Affiliation:
mlorenz@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Leipzig, N/A, Germany
Marius Grundmann
Affiliation:
grundmann@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Leipzig, N/A, Germany
Mathias Schubert
Affiliation:
schubert@engr.unl.edu, University of Nebraska-Lincoln, Department of Electrical Engineering, Lincoln, NE, 68588, United States
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Abstract

Heterojunctions composed of wurtzite-structure (piezoelectric) ZnO and perovskite-structure (ferroelectric) BaTiO3 are very interesting because of the coupling effects between the non-switchable ionic charge of wurtzite-structure and electrically switchable lattice charge of pervoskite structure at their common interface. In this paper we report the variations in the overall electrical properties of the ZnO-BaTiO3 heterostructure as a function of different physical attributes by using our previously reported physical model approach. This numerical model analysis helps us to prepare the samples by using pulsed laser deposition with specific electrical properties. This study is also useful for the future device applications.

Keywords

ferroelectricsimulationelectrical properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1074: Symposium I – Synthesis and Metrology of Nanoscale Oxides and Thin Films , 2008 , 1074-I01-11
Copyright
Copyright © Materials Research Society 2008

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References

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