Epitaxial Non c-Axis Twin-Free Bi₂Sr₂CaCu₂O8+δ Thin Films for Future THz Devices.Thin films of (117) Bi₂Sr₂Ca₂CuO8+δ (Bi-2212) were grown by Molecular Organic Chemical Vapor Deposition (MOCVD) on (110) SrTiO₃ and (110) LaAlO₃ substrates. 
MOCVD
Films are 3D epitaxial and X-ray diffraction φ-ψ scans demonstrate that, while the films grown on a flat substrate are composed of twinned grains, the films on vicinal substrate are twin-free. 
X-ray diffraction