Abstract
The preparation of non c-axis oriented high T c superconductor films with longer coherence length is one of the key technologies toward realization of viable Josephson devices. For the first time, we have succeeded in growing in-plane aligned (1 1 9)Bi-2223 films on (1 1 0)SrTiO 3 substrates by metalorganic chemical vapor deposition using a two-step growth temperature procedure. This procedure was found to be effective for orientation control and phase control in comparison with a fixed growth temperature procedure. As a result, superconducting properties were improved. The surface morphology observed by atomic force microscopy showed an in-plane aligned mountain-range shape, which strongly reflects the orientation relationship between the (1 1 9)Bi-2212 film and (1 1 0)SrTiO 3 substrate.
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