抄録
BaSnO3 (BSO) doped GdBa2Cu3Oy (GdBCO) films were deposited on CeO2 (200) substrates using the pulsed laser deposition (PLD) method. Both 2D and 3D microstructural characterization were carried out by transmission electron microscope with selected area electron diffraction patterns, scanning transmission electron microscope with energy dispersive X-ray spectroscopy and electron tomography. In the GdBCO film with BSO 7.5 mol% addition, BSO nanorods were observed with an average width of 8.7 nm, average length of 43 nm, volume fraction of 3.4%, and number density of 2.7×1016 cm-3. Additionally, BSO nanorods were grown in the film with the tilted angle of approximately 0-30 degrees to the c-axis direction of GdBCO. Improvements of Jc were clearly due to the presence of these BSO nanorods.
