Biaxially textured Ni-alloy tapes as substrates for buffer and Y-Ba-Cu-O film growth

Highly cube ({001}[100]) textured Ni- and Ni-alloy tapes are produced by heavy cold rolling and recrystallisation annealing, Due to impurities in Ni, abnormal grain growth destroying the cube texture often occurs at temperatures above 600 degreesC. This could be prevented by alloying Ni with 0.1at.% of different elements each leading to a texture improvement with increasing annealing temperature. YBa2Cu3O7-delta-films deposited on these tapes reach critical current densities up to 0.5x10(6) A/cm(2). Also Ni-Cr and NI-V were successfully processed to highly cube textured tapes, Their magnetic and mechanical properties were characterized. Ni-13at.%Cr and Ni-11at.%V have a Curie temperature below 77K. Their yield strength is three times higher than that of unalloyed Ni.