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Epitaxial Multilayers of (Sr,Ba)Nb2O6 and Conducting Films on (001) Mgo Substrates

Published online by Cambridge University Press:  21 February 2011

T. F. Huang
Affiliation:
Solid State Laboratory, Stanford University, Stanford, CA 94305.
K. E. Youden
Affiliation:
Solid State Laboratory, Stanford University, Stanford, CA 94305.
S. Schwyn Thöny
Affiliation:
Solid State Laboratory, Stanford University, Stanford, CA 94305.
L. Hesselink
Affiliation:
Solid State Laboratory, Stanford University, Stanford, CA 94305.
J. S. Harris Jr.
Affiliation:
Solid State Laboratory, Stanford University, Stanford, CA 94305.
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Abstract

(Sr,Ba)Nb2O6 (SBN) is a very promising material for nonlinear optical applications because of its high electro-optic and nonlinear optical coefficients. For these applications, SBN requires ferroelectric poling along the optical axis. Conducting layers such as Pt or YBCO must therefore be deposited to provide electrodes above and below the SBN film.

We have investigated the epitaxial growth of multilayers of Sr0.61Ba0.39Nb2O6/Pt and Sr0.61Ba0.39Nb2O6/YBCO thin films on (001) MgO substrates by pulsed laser deposition. X-ray diffraction 2θ scans indicate epitaxial growth of SBN/Pt/MgO and SBN/YBCO/MgO heterostructures with their c-axes perpendicular to the substrate plane. X-ray phi scans indicate single crystal Pt and YBCO growth with one in plane orientation. atomic Force Microscopy shows surface roughness of 2.19 nm, and no evidence of particles is observed.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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References

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