YbBa2Cu4O8 (Yb124) films were prepared on SrTiO3(001) and SrTiO3(110) subst
rates by coating-pyrolysis process at ambient pressure, and the alignments
of these films were investigated by XRD theta-2 theta scanning ar Ld XRD po
le-figure analysis. Films prepared on SrTiO3(001) consisted of almost singl
e-phase -oriented epitaxial Yb124. On the other hand, films on SrTiO3(
110) consisted of -oriented epitaxial Yb124 and other impurity phases,
one of which was considered to be so-cabled "other perovskite" phase.