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Electrooptic properties of highly oriented Pb(Zr,Ti)O3 film grown on glass substrate using lanthanum nitrate as a buffer layer

Published online by Cambridge University Press:  01 November 2004

Jong-Jin Choi
Affiliation:
School of Materials Science and Engineering, Seoul National University, Seoul 151-742, Korea
Gun-Tae Park
Affiliation:
School of Materials Science and Engineering, Seoul National University, Seoul 151-742, Korea
Hyoun-Ee Kim*
Affiliation:
School of Materials Science and Engineering, Seoul National University, Seoul 151-742, Korea
*
a)Address all correspondence to this author. e-mail: kimhe@snu.ac.kr
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Abstract

Materials with preferred orientation exhibit unique properties that are frequently improved in comparison with those that are randomly oriented. Optical waveguide devices require high-quality single-crystal–like thin films because of their low optical propagation loss and their near–single-crystal properties. The growth mechanisms of textured films on non-lattice matched amorphous substrates, such as glass, are different from those on single-crystal substrates or the surface of a metal electrode. In this study, highly (100) oriented Pb(Zr,Ti)O3 PZT films were grown on an amorphous substrate by means of the sol-gel multicoating method, using lanthanum nitrate as a buffer layer. The lanthanum nitrate buffer layer was also very effective as a diffusion barrier against Pb-Si interdiffusion. The electrooptic properties of the PZT films were markedly enhanced when their orientation was adjusted to the (100) direction.

Type
Rapid Communications
Copyright
Copyright © Materials Research Society 2004

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References

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