Abstract
AbstractIn order to improve transport and noise properties of YBa2Cu3O7–δ thin films, we studied a technique to produce gold nano‐particles in these films. We report on the formation of these particles from thin gold layers during pulsed laser deposition of YBa2Cu3O7–δ. Depending on initial gold layer thickness we analyzed their size distribution and structural properties. Gold particles preferentially grow at the YBa2Cu3O7–δ surface and the SrTiO3/YBa2Cu3O7–δ interface and show an epitaxial alignment parallel to the 〈001〉YBCO direction. We discuss the influence of these particles on the crystal structure of YBa2Cu3O7–δ in regard to their application as artificial pinning centers. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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