An unexplored approach for the improvement of the flux pinning of YBa2Cu3O7-x(YBCO) superconducting films grown by pulsed laser deposition (PLD) on SrTiO3 single-crystals is presented. Hence, substrate-decorated ZrO2 nanoislands combined with Ba2Y(Nb/Ta)O6 nanocolumns were engineered into YBCO films. The nanoislands produced a high density of pinning centres. In this synergistic combined pinning scenario, an absence of a temperature scaling pinning force, Fp(H) behaviour was observed, confirming several pinning mechanisms are active in the system. Thus, the high density of stacking faults and BYTO nanocolumns were both shown to be effective for high field pinning at <50K. Further optimisation of the densities and volumes of each pinning type is expected to produce enhanced high field (>9 T) pinning behaviour.
Synergistic strategies for enhancing flux pinning in YBa2Cu3O7-x thin films at high fields and low temperature
Rizzo F.;Augieri A.;Celentano G.
2025-01-01
Abstract
An unexplored approach for the improvement of the flux pinning of YBa2Cu3O7-x(YBCO) superconducting films grown by pulsed laser deposition (PLD) on SrTiO3 single-crystals is presented. Hence, substrate-decorated ZrO2 nanoislands combined with Ba2Y(Nb/Ta)O6 nanocolumns were engineered into YBCO films. The nanoislands produced a high density of pinning centres. In this synergistic combined pinning scenario, an absence of a temperature scaling pinning force, Fp(H) behaviour was observed, confirming several pinning mechanisms are active in the system. Thus, the high density of stacking faults and BYTO nanocolumns were both shown to be effective for high field pinning at <50K. Further optimisation of the densities and volumes of each pinning type is expected to produce enhanced high field (>9 T) pinning behaviour.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
