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Effect of Composition on Ferroelectric Response of Bi4-xSmxTi3O12 Thin Films

Published online by Cambridge University Press:  26 February 2011

Sandra Dussan ,
Maharaj Tomar ,
Ricardo Melgarejo  and
Ram Katiyar
Sandra Dussan
Affiliation:
mtomar@uprm.edu
Maharaj Tomar
Affiliation:
mtomar@uprm.edu
Ricardo Melgarejo
Affiliation:
mtomar@uprm.edu
Ram Katiyar
Affiliation:
mtomar@uprm.edu
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Abstract

Bismuth titanate (Bi4Ti3O12) is an electroceramic within the Aurivillius phase material with week ferroelectric memory. However, the partial substitution of Bi ion by a trivalent rare earth resulted in improved ferroelectric polarization. We synthesized Bi4-xSmxTi3O12 by a solution chemistry route and thin films were deposited by spin coating on Pt (Pt/TiO2/SiO2/Si) substrate. X-ray diffraction studies of the films showed a stoichiometric solid solution for the composition x ≤0.85. The films showed fatigue free ferroelectric polarization (Pr = 19.8 µC/cm2) for the composition x = 0.70. The films showed low leakage current at room temperature, showing the possibility of lead free ferroelectric devices.

Keywords

ferroelectricitysol-gelx-ray diffraction (XRD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 902: Symposium T – Ferroelectric Thin Films XIII , 2005 , 0902-T03-54
Copyright
Copyright © Materials Research Society 2006

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References

1 Aurivillius, B., Ark Kemi 1 463 (1949).Google Scholar
2 Subbarao, E. C., J. Phys Chem. Solids 23, 665 (1962).Google Scholar
3 Chon, U., Jang, H. M., King, M. G., and Chang, C.H., Phys Rev. Lett. 89, 0876011 (2002).Google Scholar
4 Tomar, M. S., Melgarejo, R.E., Hidalgo, A., Majumder, S.B., and Katiyar, R.S., Appl. Phys. Lett. 83, 341 (2003).Google Scholar
5 Graves, P. R., Hua, G., Myhra, S., and Thompson, J. G., J. Solid State Chem. 144, 112 (1995).Google Scholar