[en] Full text: Enhancing critical current density in high temperature superconductors is a signicant goal and remains a major challenge for different technological applications. One alternative approach to conventional vortex pinning is to pin (localise) the magnetic flux rather than the vortex core. This possibility has not been studied to a large extent. Introducing a lattice of periodic magnetic dots has been shown to be useful for understanding interactions between superconducting vortices and these ferromagnetic arrays, as well as the resultant effects of vortex magnetic pinning dynamics and enhancement of the critical current density (J_𝑐). The high quality superconducting YBa₂Cu₃O₇ (YBCO) thin films have been grown by pulsed laser deposition (PLD). Buffered arrays of ferromagnetic dots with different configurations have also been produced by PLD on top of YBCO films. The dimensions of the individual ferromagnetic dots are comparable to the magnetic field penetration depth. Magnetization measurements have been carried out in the YBCO thin films right after deposition and then also after producing the ferromagnetic patterns. The results show that some patterns produce a striking J_c enhancement of up to 24.5% over the high magnetic field range while it achieved 22% in low magnetic field in temperature 10 and 60K respectively. The enhancement is likely due to the flux localisation (pinning) effects, rather than magnetic shielding. The J_c changes seem to depend on rather minor variations in initial pinning and corresponding J_c level of the films. (author)