High critical currents and reduced anisotropy are fundamental properties also for chemical solution deposited YBa2Cu3O7 coated conductors. Thickness in the range of 1 m was achieved through control of nucleation and growth process, and nanocomposites with half effective anisotropy of pristine films were reached. Resistivity measurements up to 65 T and microwave surface impedance were properly combined to achieve this conclusion.
Growth of all-chemical high critical current YBa2Cu3O7 thick films and coated conductors
Cornelia Pop, Bohores Villarejo, Flavio Pino, Bernat Mundet, Susagna Ricart, Mariona de Palau, Teresa Puig, Xavier Obradors
Superconductor Science & Technology 32, 015004, 2019
Intrinsic anisotropy versus effective pinning anisotropy in YBa2Cu3O7 thin films and nanocomposites
Elena Bartolome, Ferran Valles, Anna Palau, Víctor Rouco, Nicola Pompeo, Fedor F. Balakirev, Boris Maiorov, Leonardo Civale, Teresa Puig, Xavier Obradors, Enrico Silva
Physical Review B 100, 054502, 2019
Figure: (a) Evolution of the total critical current, Ic (77K) with YBCO film thickness (nm) using different deposition (spin coating and ink jet printing (IJP)) for single crystalline and metallic substrates, up to 1 µm thickness. Dashed lines indicate the slopes corresponding to different critical current densities, (b) Dependence of effective anisotropy factor (geff) and the intrinsic anisotropy factors (determined from resistive measurements in high fields up to 65 T (gHc2,HF), resistive measurements (gHc2,res) and microwave measurements (gMW) as a function of the nanostrain (%) for the pristine films (shown at 0.1 % nanostrain) and a set of nanocomposites with different nanostrain.