Abstract
We have investigated the basic characteristics of the liquid phase epitaxy (LPE) grown (Y,Yb) Ba 2Cu 3O y film and have proposed a meander shaped film to realize a high critical current as well as a high electric resistance in the normal-conducting state due to a long current path for the persistent current switch (PCS) materials. The LPE film exhibited an excellent critical current density in the superconducting state and a high electric resistance in the normal state which are both required for PCS applications. The meander shape of the seed films could be maintained during the further LPE growth. This could be explained by decreasing the lateral growth rate due to the combined phenomena of the step bunching and the difficulty of the overhanging growth above the MgO valley which was formed by the partial dissolution of the MgO surface to the solution. The meander shaped LPE film with a long current path on the substrate of 2″ in diameter could be successfully grown, which is a strong candidate as the PCS materials.
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