Optimization of in situ annealing conditions for off-axis PLD MgB2 films

Authors

Yi Sun Wu, University of WollongongFollow
Yue Zhao, University of WollongongFollow
David Wexler, University of WollongongFollow
Jung Ho Kim, University of WollongongFollow
S. X. Dou, University of WollongongFollow

RIS ID

24927

Publication Details

Wu, Y., Zhao, Y., Wexler, D., Kim, J. and Dou, S. X. (2008). Optimization of in situ annealing conditions for off-axis PLD MgB2 films. Physica C: Superconductivity and its Applications, 468 (3), 218-222.

Abstract

We optimized the conditions for the in situ annealing that follows the off-axis pulsed laser deposition of MgB2 thin films. The influence on the superconductivity of the two major annealing parameters, which are the dwell time, tau(ann), and the sintering temperature, T-ann, was investigated. The optimal annealing conditions regarding the transition temperature were obtained by analysing the change in the critical temperature, T-c, with different dwell times and sintering temperatures. X-ray diffraction (XRD) theta-2 theta scans on the two series of films confirm the sole MgB2 phase composition in the best T-c film with a zero resistance T-c of 34.2K and transition width of 0.5K. The film also shows good critical current density J(c) performance in magnetic fields.

Grant Number

ARC/DP0770205

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0770205