Relationship between superconducting properties of EuBa2Cu3O7 thin films and surface morphology of CeO2 buffer layers on R-Al2O3

EuBa2Cu3O7 films grown on vicinal R-Al2O3 substrates with CeO2 buffer layers by magnetron sputtering

“…Nie et al reported that the critical thickness of YBa 2 Cu 3 O 7 (YBCO) films deposited on vicinal R-Al 2 O 3 (5.22°off toward [1 1 0]) substrates buffered with CeO 2 using the PLD method was about three-times larger than that of films deposited on non-tilted R-Al 2 O 3 substrates [5]. The YBCO film grown on the vicinal R-Al 2 O 3 substrate has a distinctive surface with circular pores.…”

Effect of Sputter Gas Pressure and RF Power on Surface Morphology of CeO2 Buffer Layers and Superconducting Properties of EuBa2Cu3O7-δ Thin Films by Magnetron Sputtering

“…It has been reported that the growth of facets can be suppressed by controlling the film deposition rate (R d ) by adjusting substrate configuration and that minute grains grow on CeO 2 buffer layers of 300 nm thickness on the erosion truck. 9) In this study, R d was controlled by adjusting sputter gas pressure and RF power. We examined the effects of R d and the film thickness of a CeO 2 buffer layer on the surface morphology and crystallinity of the CeO 2 buffer layer and on the superconducting properties, surface morphology, and crystallinity of an EBCO thin film.…”