In-plane orientation of Bi2Sr2CaCu2Ox thin films on (110) SrTiO3 vicinal surfaces.
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Crystal structures of Bi 2 Sr 2 CaCu 2 O x thin films of which the c axes are tilted about 45 o against substrate surfaces were investigated with x-ray-diffraction, x-ray asymmetric reflection, x-ray topography, and cross-sectional high-resolution transmission-electron microscopy. The following substrates were used: (110), 2 o off (110), 5 o off (110), and 10 o off (110) SrTiO 3 . Bi 2 Sr 2 CaCu 2 O x films were epitaxially grown with the (117) Bi 2 Sr 2 CaCu 2 O x vicinal surface on the 5 o off (110) substrate and were not epitaxially grown on the other substrates