Crystal orientation control of YBa2Cu3Oy thin films on MgO prepared by excimer laser ablation with CO2 laser irradiation

Abstract

Superconducting YBa2Cu3Oy (YBCO) thin films were prepared on a MgO (100) substrate by XeCl excimer laser ablation with CO2 laser irradiation. Control experiments of crystal orientation of YBCO thin films were carried out by varying the substrate temperature during deposition; c-axis oriented YBCO film, a-axis oriented YBCO film, and a-axis oriented YBCO film on the c-axis were obtained on the MgO (100) substrates. a-axis oriented YBCO films normal to the MgO (100) substrate were fabricated using the modified self-template method.