Partial melting followed by recrystallization at lower temperatures during high temperature treatment of superconducting Ba2YCu3O7-δ films is associated with texture development In these films, partial melting is induced by rapid thermal annealing at a temperature slightly above the peritectic melting temperature of Ba2YCu3O7-δ. Short firing duration prevents segregation of liquid and permits recrystallization of the correct phase at around 920°C.
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Ng, M.F., Peterson, S.C. & Cima, M.J. Recrystalljzation of Non-Vacuum Derived Ba2ycu3o7-δ Films. MRS Online Proceedings Library 169, 731–734 (1989). https://doi.org/10.1557/PROC-169-731