Ferroelectric/superconductor PbZr0.52Ti0.48O 3/Y1Ba2Cu3O7-x/LaAlO 3 heterostructure prepared by Nd:YAG pulsed laser deposition

C. Björmander, A. M. Grishin, B. M. Moon, J. Lee, K. V. Rao

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Abstract

Ferroelectric/superconductor PbZr0.52Ti0.48O 3/Y1Ba2 Cu3O7-x heterostructures have been grown on single-crystal LaAlO3 in a Nd:YAG pulsed laser deposition system. The cuprate superconductor is used as the metallic electrode for polarizing the lead zirconate titanate (PZT) layer. X-ray diffraction and rocking curve data evidence almost epitaxial growth of both the PZT (≊4500 Å) and the (YBCO) (≊2500 Å) layers on LaAlO 3 substrates. Ferroelectric measurements yield remnant polarization values (at 177 kV/cm) of 29 μC/cm2, and coercive fields in the range of 70-85 kV/cm. The electrical resistivity of the PZT layer is determined to be 5×108 Ω cm. The electrical resistivity data for the YBCO underlayer even in the presence of the PZT overlayer yields T c=89.5 K with a transition width of δT=1 K. In summary, excellent characteristics of coexisting superconducting and ferroelectric properties have been achieved in laser deposited PZT/YBCO/LaAlO3 heterostructures. As far as we know this is the first time such a result has been obtained by using a Nd:YAG pulsed laser deposition technique.

Original languageEnglish
Pages (from-to)3646-3648
Number of pages3
JournalApplied Physics Letters
Volume64
Issue number26
DOIs
Publication statusPublished - 1994 Dec 1
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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