Chemical solution epitaxy was used to deposit anepitaxial film of Gd_2O_3 on roll-textured nickel. A 2-methoxyethanol solution of gadolinium methoxyethoxide wasused for spin-coating and dip-coating. Films were crystallizedusing a heat treatment at 1160 deg C for 1 h in 4 percent H_2/96percent Ar. Single-layer films were approximately 600 A inthickness, and thicker films could be produced using multiplecoatings. 0/26 x-ray diffractograms revealed only (0041)reflections, indicating a high degree of out-of-plane texture. Apole-figure about the Gd_2O)3 (222) reflection indicated asingle in-plane epitaxy. Scanning electron microscopy showedthat the films were smooth, continuous, and free of pin holes.Atomic force microscopy revealed an average surface roughnessof 53 A. Electron diffraction indicated that the misalignment ofthe majority of the grains in the plane was less than 100. High-current (0.4 MA/cm~2) Yba_2Cu_3O_(7-#delta#) films weregrown on roll-textured nickel substrates using Gd_2O_3 as thebase layer in a three-layer buffer structure.
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Laboratoire de Physico - & Toxico-Chimie (LPTC) des Systems Naturels UMR 5472 CNRS, Universite de Bordeaux I, 351, cours de la Liberation 33405 Talence Cededx, France.;
