2026-04-14T02:27:59Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/216302024-06-18T11:51:32Zcom_2072_452955com_2072_2054col_2072_453063

00925njm 22002777a 4500 dc Rasi, Silvia author Queraltó, Albert author Banchewski, Juri author Saltarelli, Lavinia author Garcia, Diana author Pacheco, Adrià author Gupta, Kapil author Kethamkuzhi, Aiswarya author Soler Bru, Laia author Jareño, Julia author Ricart, Susagna author Farjas Silva, Jordi author Roura Grabulosa, Pere author Mocuta, Cristian author Obradors, Xavier author Puig Molina, Teresa author 2022-09-18 Transient liquid assisted growth (TLAG) is an ultrafast non-equilibrium growth process mainly governed by kinetic parameters, which are only accessible through fast in situ characterizations. In situ synchrotron X-ray diffraction (XRD) analysis and in situ electrical resistivity measurements are used to derive kinetic diagrams of YBa2Cu3O7−x (YBCO) superconducting films prepared via TLAG and to reveal the unique peculiarities of the process. In particular, diagrams for the phase evolution and the YBCO growth rates have been built for the two TLAG routes. It is shown that TLAG transient liquids can be obtained upon the melting of two barium cuprate phases (and not just one), differentiated by their copper oxidation state. This knowledge serves as a guide to determine the processing conditions to reach high performance films at high growth rates. With proper control of these kinetic parameters, films with critical current densities of 2-2.6 MA cm−2 at 77 K and growth rates between 100-2000 nm s−1 are reached. These growth rates are 1.5-3 orders of magnitude higher than those of conventional methods http://hdl.handle.net/10256/21630 Anàlisi tèrmica Superconductors Thermal analysis Superconductors Kinetic Control of Ultrafast Transient Liquid Assisted Growth of Solution-Derived YBa2Cu3O7-x Superconducting Films