Crystal growth modified by pulsed laser irradiation on growing surface in Ba-Cu-O film preparation by laser ablation

金沢大学設計製造技術研究所 / 金沢大学理工研究域電子情報学系 / 金沢大学工学部
Ba2YCu3Ox superconducting films were prepared by Nd:YAG laser ablation, equipped with a second (ArF excimer) laser for irradiation onto the growing film surface. The irradiation onto the film during the deposition were delayed for various delay times against the ablation of Ba2YCu3Ox target. The experiment showed that the second laser irradiation within several tens ps around the ablation event induces a change of the crystal orientation. This result suggests that the crystal growth for the laser ablation is determined mainly around this time scale.