Appeal No. 95-0537
Application No. 08/077,709
least 80% by volume a-axis oriented and c-axis aligned in one
preferential direction on a substrate having an anisotropic
surface cell." Eom discloses a-axis)oriented superconductive
films which have been grown epitaxially on SrTiO and LaAlO3 3
substrates. According to Eom (p. 1550, second column):
Figure 1 shows a planar view transmission
electron micrograph of a typical a-axis film.
Lattice fringes perpendicular to the c-axis are
clearly seen in the a-axis)oriented grains. The
a-axis)oriented YBCO grains are seen to be 100 to
500 D wide. The predominant a-axis grains lie along
one of two orthogonal directions, with their c-axes
along the substrate [100] or [010].
Eom continues (p. 1550, third paragraph):
Figure 2B shows the dependence of x-ray
intensity corresponding to the YBCO (102) reflection
as a function of azimuthal angle. The main peaks
correspond to the epitaxial arrangements
YBCO[001]/SrTiO [100] and YBCO[001]/SrTiO [010].3 3
Close to 99.9 volume percent of the a-axis grains
lie along these directions. [Emphasis added.]
Referring to Figure 2B of Eom, appellants point out
(Brief, pp. 7-8):
[T]he Eom film includes two peaks of substantially
the same size, one reflection at N = about 50E and
the other reflection at N = about 140E and,
therefore, represents that substantially half of the
CuO planes lie in one direction and the other half
in another direction which is about 90E from the
first.
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