Structural and electronic properties of epitaxial YBa2Cu3O7−δ–La0.67Ca0.33MnO3 bilayers grown on SrTiO3 (1 1 0) substrates

Abstract Epitaxial bilayers of the high-temperature-superconductor YBa 2 Cu 3 O 7 − δ (YBCO) and the ferromagnetic metal La 0.67 Ca 0.33 MnO 3 (LCMO) were prepared by pulsed laser deposition on (1 1 0)-oriented SrTiO 3 substrates, such that the CuO 2 planes of YBCO are perpendicular to the YBCO–LCMO interface. X-ray diffraction and Raman scattering demonstrate complete (1 1 0) orientation of both YBCO and LCMO overlayers. The resistivity and magnetization of the bilayer films are highly anisotropic. The critical temperatures for superconductivity and ferromagnetism as well as the saturation magnetization exhibit modest reductions compared to corresponding bulk values.