Comparison of YBa2Cu3O7-δ precursors made using TFA-MOD and BaF2 ex-situ processes and their post-deposition processing under low pressure conditions

Yifei Zhang; M. Parans Paranthaman; Roeland Feenstra; Tolga Aytug; David K. Christen

doi:10.1109/TASC.2005.847763

Comparison of YBa₂Cu₃O_7-δ precursors made using TFA-MOD and BaF₂ ex-situ processes and their post-deposition processing under low pressure conditions

Yifei Zhang, M. Parans Paranthaman, Roeland Feenstra, Tolga Aytug, David K. Christen

Nanomaterials Chemistry Group

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Two ex-situ techniques including metal-organic deposition using solution from trifluoroacetates (TFA-MOD) and electron beam co-evaporation using BaF ₂ are regarded as promising candidates for fabricating long-length, uniform, high critical current density (J_c) YBa₂Cu ₃O_7-δ (YBCO) superconducting films for practical applications. It is generally accepted that the precursors made by these two methods and their post-deposition processing are basically similar. Typical MOD-TFA and e-beam BaF₂ precursors were made and then annealed in our low-pressure processing system. It was found that the conditions required for the conversion of these two types of precursors are quite different. The precursors were compared in terms of the differences in their composition and pre-conversion structure. The conversion behaviors were studied by structure characterization and property measurement. The effect of composition, especially the fluorine content on the conversion reaction is discussed.

Original language	English
Pages (from-to)	2659-2662
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	15
Issue number	2 PART III
DOIs	https://doi.org/10.1109/TASC.2005.847763
State	Published - Jun 2005

Funding

Manuscript received October 5, 2004. This work was supported by the U.S. Department of Energy, Division of Materials Sciences, Office of Science, Office of Electric Transmission and Distribution. The research was performed at Oak Ridge National Laboratory, managed by U.T.-Battelle, LLC for the USDOE under contract DE-AC05-00OR22725.

Funders	Funder number
Division of Materials Sciences
Office of Electric Transmission and Distribution
U.S. Department of Energy
Office of Science

Keywords

Conversion
Precursor
XPS
YBCO film

Access to Document

10.1109/TASC.2005.847763

Cite this

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title = "Comparison of YBa2Cu3O7-δ precursors made using TFA-MOD and BaF2 ex-situ processes and their post-deposition processing under low pressure conditions",

abstract = "Two ex-situ techniques including metal-organic deposition using solution from trifluoroacetates (TFA-MOD) and electron beam co-evaporation using BaF 2 are regarded as promising candidates for fabricating long-length, uniform, high critical current density (Jc) YBa2Cu 3O7-δ (YBCO) superconducting films for practical applications. It is generally accepted that the precursors made by these two methods and their post-deposition processing are basically similar. Typical MOD-TFA and e-beam BaF2 precursors were made and then annealed in our low-pressure processing system. It was found that the conditions required for the conversion of these two types of precursors are quite different. The precursors were compared in terms of the differences in their composition and pre-conversion structure. The conversion behaviors were studied by structure characterization and property measurement. The effect of composition, especially the fluorine content on the conversion reaction is discussed.",

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Comparison of YBa₂Cu₃O_7-δ precursors made using TFA-MOD and BaF₂ ex-situ processes and their post-deposition processing under low pressure conditions. / Zhang, Yifei; Paranthaman, M. Parans; Feenstra, Roeland et al.
In: IEEE Transactions on Applied Superconductivity, Vol. 15, No. 2 PART III, 06.2005, p. 2659-2662.

Research output: Contribution to journal › Article › peer-review

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