Bi2(Sr, Ca)3Cu2Ox and Bi2(Sr, Ca)4Cu3Ox Thin Films with (11n) Orientation

Abstract
As-grown Bi2(Sr, Ca)3Cu2O x and Bi2(Sr, Ca)4Cu3O x thin films with the (11n) orientation were formed on SrTiO3(110) substrates by consecutive sputtering. RHEED patterns and XRD analysis indicated that the c-axis of the Bi2(Sr, Ca)3 Cu2O x and Bi2(Sr, Ca)4Cu3O x films are tilted against the substrate surface by approximately 41° and 45°, respectively. The Bi2(Sr, Ca)3Cu2O3 film was found to have mainly a (117) orientation, whereas the Bi2(Sr, Ca)4Cu3O x film is considered to have mainly a (1110) orientation.