La2Zr2O7 films on Cu-Ni alloy by chemical solution deposition process

Films of La2Zr2O7 (=LZO) have been formed by chemical solution deposition technique (CSD) on new bi-axially textured Cu-Ni alloy tapes based on rolled constantan (CU55Ni45) Rabits. The precursorused was acetylacetonates treated in propionic acid (0.1-0.87 mol/l) and then deposited by spin-coating. The LZO film starts to crystallize above 850 degrees C, the film nucleates bi-axially textured on the substrate (with unit cell axis rotated 45 degrees from those of the substrate). The top part of the film is not textured even after long annealing time at 1100 degrees C, but the interfacial part is bi-axially textured. Thus, synthesis of bi-axially textured films on Cu55Ni45 Rabits seems possible but more works are needed to optimize its properties. (c) 2006 Elsevier B.V. All rights reserved.