Film growth for coated conductor-oriented REBa2Cu3Oy films by means of excimer and Nd:YAG pulsed laser deposition

Abstract We investigated the influence of laser sources, such as an excimer and a Nd:YAG laser, on REBa 2 Cu 3 O y (RE123) film growth by pulsed laser deposition (PLD). Good superconducting properties such as T c  ∼ 90 K and J c  > 1 MA/cm 2 at 77 K were obtained for the films produced in this study. On the other hand, J c values in magnetic fields were lower compared to a Y123 film prepared by a conventional excimer-PLD method. In addition to the J c values, surface morphologies were also different. The Y123 film produced by Nd:YAG-PLD exhibited smaller grain diameters than the film produced by excimer-PLD.