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Ferroelectric Properties of SBT (Sr/Bi/Ta = 0.8/2.3/2) Thin Films Using a Novel Chemical Solution Deposition

Published online by Cambridge University Press:  10 February 2011

Seung-Hyun Kim ,
D.J. Kim ,
S.K. Streiffer ,
J-P. Maria  and
Angus I. Kingon
Seung-Hyun Kim
Affiliation:
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695
D.J. Kim
Affiliation:
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695
S.K. Streiffer
Affiliation:
Materíals Science Division, Argonne National Laboratory, Argonne, IL 60439
J-P. Maria
Affiliation:
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695
Angus I. Kingon
Affiliation:
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695
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Abstract

A new chemical route using an alkanolamine chelating agent for synthesis of ferroelectric Sro0.8Bi2.3Ta2O9 (SBT) thin films is investigated. The addition of alkanolamine provided stability to the SBT solution by retarding the hydrolysis and condensation rates. This solution could be stored for 30 days without any appreciable change of the properties. The crystallinity and the microstructure of the SBT thin films improved with increasing annealing temperature, and strongly influenced the ferroelectric properties. This alkanolamine modified films annealed at 800 °C exhibited low voltage saturation, high remanent polarization and resistance to fatigue after 1010 switching cycles. These electrical properties are favorable for non-volatile memory applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 541: Symposium O – Ferroelectric Thin Films VII , 1998 , 223
Copyright
Copyright © Materials Research Society 1999

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References

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