Issue Eur. Phys. J. Appl. Phys. Volume 37, Number 1, January 2007 Page(s) 49 - 52 Section Surfaces, Interfaces and Films DOI 10.1051/epjap:2006153 Published online 13 December 2006

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

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

Changhong Yi^{1, 2, 3}, Fangren Hu², Dongning Zheng², Qinggang Zhang³, Yingfei Chen² and Xiaoping Xu<sup>2

1</sup>  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

Yich@sdjtu.edu.cn

(Received: 21 March 2006 / Received in final form: 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.

PACS
74.72.Jt - Other cuprates, including Tl and Hg-based cuprates.
74.78.Bz - High-Tc films.

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