Matching field effects in c-axis in-plane aligned a-axis-oriented YBa2Cu3Oy films with two-dimensional artificial pinning centers induced by multilayered nano-structures

作者：Takamura M^*; Mukaida M; Horii S; Ichinose A; Kita R; Matsumoto K; Yoshida Y; Namba M; Awaji S; Watanabe K; Teranishi R; Mori N

来源：Superconductor Science and Technology, 2010, 23(4): 045023.

DOI：10.1088/0953-2048/23/4/045023

A relationship between microstructures of YBa2Cu3Oy (Y123) films with two-dimensional artificial pinning centers (2D APCs) and their critical current density (J(c)), especially under matching fields (B-phi), is discussed. Using a pulsed laser deposition (PLD) method, c-axis in-plane aligned a-axis-oriented Y123/Pr123 multilayer films were grown on substrates. The Pr123 interlayer distance was changed by controlling a target shape and its rotation speed in the PLD process. The multilayer structure was observed in cross-sectional transmission electron microscopy images. Critical temperatures of the films decrease as the Y123 layer becomes thinner. The magnetic field (B) dependence

• 出版日期2010-4