Eur. Phys. J. Appl. Phys. 37, 49-52 (2007)
https://doi.org/10.1051/epjap:2006153

Tl-2212 thin films annealed in a Al₂O₃ crucible and a steel container^*

¹ Shandong Jiaotong University, Department of Physics, Jinan, Shandong Province 250023, China
² National Laboratory of Superconductivity, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080, China
³ Shangdong Normal University, College of Physics and Electronics, Jinan, Shandong Province 250014, China

Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 21 March 2006
Revised: 12 September 2006
Accepted: 13 October 2006
Published online: 13 December 2006

Abstract

Tl₂Ba₂CaCu₂O_y(Tl-2212) thin films were fabricated on (001) LaAlO₃ substrates by a two-step technique in a semi-closed aluminate crucible and a sealed steel container, respectively. First, the amorphous precursor films were deposited by the pulsed laser deposition (PLD) method, and then they were thalliated in different containers. Almost pure phase Tl-2212 thin films can be prepared in both of the containers. However, the as-annealed films show obvious differences in superconducting properties and microstructure.