| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9812974 | Thin Solid Films | 2005 | 8 Pages |
Abstract
Films of Re0.25Ba2Ca2Cu3Ox precursors have been produced in-situ by spray pyrolysis as a preliminary step of the synthesis of Hg-based superconductor films without post-annealing treatment. The films are homogeneous with smooth surfaces. The films are a mixture of BaCuO2, Ba4Ca1+xRe2âyO12, CuO and CaO that transform to Ca2CuO3 only after post-annealing. These phases are found to be strongly textured with respect to the underlying single-crystal substrates (LaAlO3 (001) and MgO (001)). The CuO does not grow with the same orientation on LaAlO3 and MgO. After ex-situ mercuration, Hg-1212 on LaAlO3 and Hg-1223 on MgO are formed epitaxially thanks to a CuO buffer layer.
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Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
D. De Barros, P. Odier, F. Weiss,