Preparation of PrBa2Cu3Oy and PrBa2Cu3Oy/YBa2Cu3Oy epitaxial films using molecular beam epitaxy

21 January 1991

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 58 (3) , 298-300
https://doi.org/10.1063/1.104667

Abstract

Using molecular beam epitaxy, we have successfully prepared PrBa₂Cu₃O_y (PBCO) films and PBCO/YBa₂Cu₃O_y (YBCO) layered structures. Epitaxial growth of these films was confirmed by in situ reflection high‐energy electron diffraction. The temperature dependence of resistivity in the PBCO film showed semiconducting behavior. The lattice parameters of Pr_1+xBa_2−xCu₃O_y films decreased when x increased and almost coincided with that of well‐oxidized YBa₂Cu₃O_y films (y∼7) when x∼0.3. These experimental results indicate that YBCO/PBCO/YBCO multilayers are suitable for artificial layered structures of oxide superconductors, i.e., electronic devices.

Keywords

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