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Ferroelectric Properties and Crystal Structure of YBa2Cu3O7/BaxSr(1−x)TiO3 Heterostructures

Published online by Cambridge University Press:  10 February 2011

CH. Schwan ,
F. Martin ,
G. Jakob ,
J. C. Martinez  and
H. Adrian
CH. Schwan
Affiliation:
Johannes Gutenberg-Universität, Institut für Physik, Mainz, Germany
F. Martin
Affiliation:
Johannes Gutenberg-Universität, Institut für Physik, Mainz, Germany
G. Jakob
Affiliation:
Johannes Gutenberg-Universität, Institut für Physik, Mainz, Germany
J. C. Martinez
Affiliation:
Johannes Gutenberg-Universität, Institut für Physik, Mainz, Germany
H. Adrian
Affiliation:
Johannes Gutenberg-Universität, Institut für Physik, Mainz, Germany
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Abstract

Epitaxial YBa2Cu3O7/Ba0.5Sr0.5TiO3 (YBCO/BST) and YBCO/BaTiO3 (BTO) heterostructures were prepared by dc and rf sputtering on SrTiO3 and MgO substrates. The YBCO/BTO bilayers exhibit an inductive superconducting transition temperature of 85 K and the ferroelectric phase transition of BST shows a Curie-Weiss temperature of 310 K. Microstructure was investigated by x-ray-diffraction and atomic force microscopy. In this work we also studied the insulator's conductivity and the contribution of domain walls to permittivity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 493: Symposium U – Ferroelectric Thin Film VI , 1997 , 93
Copyright
Copyright © Materials Research Society 1998

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References

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