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 language | English |
|---|---|
| Pages (from-to) | 3646-3648 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 64 |
| Issue number | 26 |
| DOIs | |
| Publication status | Published - 1994 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)