We have successfully fabricated HTS - ceramic insulator composite system La
BaCaCu3O7-delta-Ba2HoHfO5.5 in which particles of the superconductor and in
sulator materials could coexist with well defined separated phases left int
act by stringent high-temperature processing conditions. Addition of Ba2HoH
fO5.5 did not have any deteriorating effect on the superconducting properti
es of the LaBaCaCu3O7-delta superconductor. (C) 2000 Published by Elsevier
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