The Study of Purity Improvement on Tl-1223 Thin Films by DC Sputtering and Post-annealing Method

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	The Study of Purity Improvement on Tl-1223 Thin Films by DC Sputtering and Post-annealing Method
	Gao, X. X.1; Xie, W.1; Wang, Z.1,2 ; Zhao, X. J.1; He, M.1; Zhang, X.1 ; Yan, S. L.1; Ji, L.1
刊名	JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
	2014-07-01
卷号	27 期号:7 页码:1665-1670
关键词	Superconductor Tl-1223 Purity Anneal
ISSN号	1557-1939
英文摘要	Un-substituted TlBa2Ca2Cu3O (x) (Tl-1223)-superconducting thin films have been fabricated on a LaAlO3 (001) substrate in oxygen by using a two-step method, which includes direct current (DC) magnetron sputtering and post-annealing process. Thallium (Tl) content in amorphous precursor films is found to be important to the crystallization of Tl-superconducting phase. Using the nominal composition of Tl1+delta Ba2Ca2Cu3 O (8) (delta = 0.1 similar to 0.2) precursor films, the formation is promoted to Tl-1223 and Tl-2223 phase rather than Tl-1212 and Tl-1223 phase with accompanying Tl-rich source pellets. When the annealing process continues, Tl-2223 phase will be converted to Tl-1223 phase at a suitable annealing time and temperature. From the X-ray diffraction pattern, only Tl-1223 (00l) peaks are observed, which shows that the purity of Tl-1223 film is improved significantly by this method. The critical temperature T (c) of Tl-1223 film is characterized at 110 K, and the critical current density J (c) (77 K, T = 0) is up to 1.5 MA/cm(2).
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Applied ; Physics, Condensed Matter
研究领域[WOS]	Physics
关键词[WOS]	HIGH-TEMPERATURE SUPERCONDUCTORS ; CRITICAL-CURRENT DENSITIES ; MAGNETIC-FIELD ; GROWTH ; ARGON
收录类别	SCI
语种	英语
WOS记录号	WOS:000338632600010
公开日期	2014-11-20
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/10556]
专题	紫金山天文台_暗物质和空间天文实验室
作者单位	1.Nankai Univ, Dept Elect, Tianjin 300071, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Gao, X. X.,Xie, W.,Wang, Z.,et al. The Study of Purity Improvement on Tl-1223 Thin Films by DC Sputtering and Post-annealing Method[J]. JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM,2014,27(7):1665-1670.
APA	Gao, X. X..,Xie, W..,Wang, Z..,Zhao, X. J..,He, M..,...&Ji, L..(2014).The Study of Purity Improvement on Tl-1223 Thin Films by DC Sputtering and Post-annealing Method.JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM,27(7),1665-1670.
MLA	Gao, X. X.,et al."The Study of Purity Improvement on Tl-1223 Thin Films by DC Sputtering and Post-annealing Method".JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM 27.7(2014):1665-1670.