Influences of Thalliation on the Morphology and Critical Temperature of Tl2Ba2CaCu2O8 Thin Films

Chin. Phys. Lett.

2002, Vol. 19

Issue (8): 1158-1160 DOI:

Original Articles

Influences of Thalliation on the Morphology and Critical Temperature of Tl₂Ba₂CaCu₂O₈ Thin Films

LEI Chong^1,2;ZHAO Xin-Jie¹;WANG Tian-Sheng^1,2;PENG Wei¹;YU Hong-Chun¹;CHEN Ying-Fei¹;TIAN Yong-Jun²;LI Lin¹

¹National Laboratory of Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 ²Department of Material Science and Chemical Engineering, Yanshan University, Qinhuandao 066004

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LEI Chong, ZHAO Xin-Jie, WANG Tian-Sheng et al 2002 Chin. Phys. Lett. 19 1158-1160

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Abstract Tl₂Ba₂CaCu₂O_x (Tl-2212) thin films were prepared by the two-step technique. A precursor film was first prepared by the pulsed laser deposition method, and then experienced the incorporation of thalliation in a one-step or two-step annealing process. The experimental results show that the two-step annealing process produces dense and smooth films, and that the one-step annealing process produced a high critical temperature film of 101K, but the transition width is wide. Precursor films with homogeneous Ba₂Ca_1.3Cu_2.1O_x composition are essential for producing high quality Tl-2212 films.

Keywords: 68.55.Jk 74.72.Fq 74.76.Bz

Published: 01 August 2002

PACS:	68.55.Jk
	74.72.Fq
	74.76.Bz

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2002/V19/I8/01158

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	LEI Chong
	ZHAO Xin-Jie
	WANG Tian-Sheng
	PENG Wei
	YU Hong-Chun
	CHEN Ying-Fei
	TIAN Yong-Jun
	LI Lin

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