LPE growth of RE123 crystals from NiO saturated solution

We tried to apply NiO materials as a buffer layer for LPE (Liquid Phase Epi taxy) coated conductors with Ni substrate. We confirmed that NiO could supp ress the reaction between NiO/Ni substrate and solution saturated with NiO. On the other hand, NiO addition to the solution decreased the peritectic t emperature of the Y123 and increased the crystallized temperature of the Ba -Cu-Ni-O compound. These make it difficult to grow the Y123 crystal from th e NiO saturated solution. Instead of Y123, we selected Sm123 which has a hi gher peritectic temperature than Y123, and confirmed that Sm123 could be gr own stably from the NiO saturated solution not only on MgO substrate but al so Ni substrate. Because of its low Tc value of Sm123 grown from the NiO sa turated solution, the (Y, Yb)123 layer was epitaxially grown as the superco nductive layer on it from the solution without NiO.