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Temperature Dependence of the Reversible and Irreversible Polarization Contributions in Ferroelectric Thin Films

Published online by Cambridge University Press:  10 February 2011

D. Bolten ,
U. Böttger ,
M. Grossmann ,
O. Lohse ,
R. Waser ,
M. Kastnert ,
G. Schindlert  and
C. Dehmo
D. Bolten
Affiliation:
IWE II, RWTH Aachen University of Technology, D-52056Germany
U. Böttger
Affiliation:
IWE II, RWTH Aachen University of Technology, D-52056Germany
M. Grossmann
Affiliation:
IWE II, RWTH Aachen University of Technology, D-52056Germany
O. Lohse
Affiliation:
IWE II, RWTH Aachen University of Technology, D-52056Germany
R. Waser
Affiliation:
IWE II, RWTH Aachen University of Technology, D-52056Germany IFF, Research Center Juelich, Germany
M. Kastnert
Affiliation:
Infineon Technologies AG, Memory Products, MP TD Fe, Munich, Germany
G. Schindlert
Affiliation:
Infineon Technologies AG, Memory Products, MP TD Fe, Munich, Germany
C. Dehmo
Affiliation:
Infineon Technologies AG, Memory Products, MP TD Fe, Munich, Germany
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Abstract

In this paper the temperature dependence of reversible and irreversible polarization contributions in the temperature range between 223 K and 473 K is investigated to elucidate the microscopic mechanism responsible for reversible and irreversible changes of the ferroelectric polarization. Small signal capacitance measurements under dc-bias are used to measure the reversible contributions. Quasi-static hysteresis measurements are used to obtain the total polarization, i.e. the sum of the reversible and irreversible contributions. The combination of both measurements allows the separation of the reversible and irreversible parts. The reversible and irreversible contributions are demonstrated for SrBi2Ta2O9 (SBT), SrBi2Ta2-xNbxO9 (SBTN) thin films and compared to tetragonal PbZr0.3Ti0.7O3 (PZT) thin film capacitors.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 596: Symposium Y – Ferroelectric Thin Films VIII , 1999 , 301
Copyright
Copyright © Materials Research Society 2000

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References

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