Research Papers in Physics and Astronomy


Date of this Version

June 1992


Published by American Institute of Physics. Appl. Phys. Lett. 60, 2803(1992). © 1992 American Institute of Physics. Permission to use.


Crystalline orientations of Tl2Ba2Ca2Cu3Oχ grains in magnetron sputtered films on MgO (001), SrTiO3 (001), and LaAlO3 (001) substrates were investigated by scanning electron microscopy. In contrast to the nearly single crystalline films on the lattice matched substrates SrTiO3 and LaAlO3, films on the MgO (001) substrate, being polycrystalline in nature, exhibit several preferred in-plane grain orientations. These orientations agree well with a simplified theory of near-coincidence site lattices between Tl2Ba2Ca2Cu3Oχ and MgO.

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