Effects of surface relief on the texture formation of melt-solidified YBa2Cu3Oz thick films on metal substrates

摘要

Biaxial orientation Of LIP to 75-85% of YBa2Cu3O2 square crystals of 0.1 1 mm size was achieved oil polycrystalline Ag-Pd substrates with artificial surface reliefs by adopting the principles of artificial epitaxy and it shape-preserving low-temperature infiltration process. Unlike artificial epitaxy for thin films. the crystal alignment as attained reproducibly by mechanical patterning of the substrates at a large, millimeter length-scale. Texture formation might be related to various factors like solute redistribution in a multicomponent system, capillarity, crystallization pressure and wall effects. Possible applications of this approach for coated conductors or in the field of multiseed substrates are discussed. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 12]