Studies of solution deposited cerium oxide thin films on textured Ni-alloy substrates for YBCO superconductor

E. Stewart; M. S. Bhuiyan; S. Sathyamurthy; M. Paranthaman

doi:10.1016/j.materresbull.2005.11.015

Studies of solution deposited cerium oxide thin films on textured Ni-alloy substrates for YBCO superconductor

E. Stewart, M. S. Bhuiyan, S. Sathyamurthy, M. Paranthaman

Nanomaterials Chemistry Group

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

21 Scopus citations

Abstract

Cerium oxide (CeO₂) buffer layers play an important role for the development of YBa₂Cu₃O_7-x (YBCO) based superconducting tapes using the rolling assisted biaxially textured substrates (RABiTS) approach. The chemical solution deposition (CSD) approach has been used to grow epitaxial CeO₂ films on textured Ni-3 at.% W alloy substrates with various starting precursors of ceria. Precursors such as cerium acetate, cerium acetylacetonate, cerium 2-ethylhexanoate, cerium nitrate, and cerium trifluoroacetate were prepared in suitable solvents. The optimum growth conditions for these cerium precursors were Ar-4% H₂ gas processing atmosphere, solution concentration levels of 0.2-0.5 M, a dwell time of 15 min, and a process temperature range of 1050-1150 °C. X-ray diffraction, AFM, SEM, and optical microscopy were used to characterize the CeO₂ films. Highly textured CeO₂ layers were obtained on Ni-W substrates with both cerium acetate and cerium acetylacetonate as starting precursors. YBCO films with a J_c of 1.5 MA/cm² were obtained on cerium acetylacetonate-based CeO₂ films with sputtered YSZ and CeO₂ cap layers.

Original language	English
Pages (from-to)	1063-1068
Number of pages	6
Journal	Materials Research Bulletin
Volume	41
Issue number	6
DOIs	https://doi.org/10.1016/j.materresbull.2005.11.015
State	Published - Jun 15 2006

Funding

Thanks are due to Lee Heatherly and Amit Goyal for providing textured Ni–W substrates. Authors would like to thank the US Department of Energy, Office of Electricity Delivery and Energy Reliability–Superconductivity program, and the ORISE Science Undergraduate Laboratory Internship (SULI) Program for funding this research. This work was performed at Oak Ridge National Laboratory, managed by U.T.-Battelle, LLC for the USDOE under contract DE-AC05-00OR22725.

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Oak Ridge National Laboratory

Keywords

A. Epitaxial growth
B. Sol-gel chemistry
C. X-ray diffraction
D. Superconductivity

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10.1016/j.materresbull.2005.11.015

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title = "Studies of solution deposited cerium oxide thin films on textured Ni-alloy substrates for YBCO superconductor",

abstract = "Cerium oxide (CeO2) buffer layers play an important role for the development of YBa2Cu3O7-x (YBCO) based superconducting tapes using the rolling assisted biaxially textured substrates (RABiTS) approach. The chemical solution deposition (CSD) approach has been used to grow epitaxial CeO2 films on textured Ni-3 at.% W alloy substrates with various starting precursors of ceria. Precursors such as cerium acetate, cerium acetylacetonate, cerium 2-ethylhexanoate, cerium nitrate, and cerium trifluoroacetate were prepared in suitable solvents. The optimum growth conditions for these cerium precursors were Ar-4% H2 gas processing atmosphere, solution concentration levels of 0.2-0.5 M, a dwell time of 15 min, and a process temperature range of 1050-1150 °C. X-ray diffraction, AFM, SEM, and optical microscopy were used to characterize the CeO2 films. Highly textured CeO2 layers were obtained on Ni-W substrates with both cerium acetate and cerium acetylacetonate as starting precursors. YBCO films with a Jc of 1.5 MA/cm2 were obtained on cerium acetylacetonate-based CeO2 films with sputtered YSZ and CeO2 cap layers.",

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AU - Paranthaman, M.

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AB - Cerium oxide (CeO2) buffer layers play an important role for the development of YBa2Cu3O7-x (YBCO) based superconducting tapes using the rolling assisted biaxially textured substrates (RABiTS) approach. The chemical solution deposition (CSD) approach has been used to grow epitaxial CeO2 films on textured Ni-3 at.% W alloy substrates with various starting precursors of ceria. Precursors such as cerium acetate, cerium acetylacetonate, cerium 2-ethylhexanoate, cerium nitrate, and cerium trifluoroacetate were prepared in suitable solvents. The optimum growth conditions for these cerium precursors were Ar-4% H2 gas processing atmosphere, solution concentration levels of 0.2-0.5 M, a dwell time of 15 min, and a process temperature range of 1050-1150 °C. X-ray diffraction, AFM, SEM, and optical microscopy were used to characterize the CeO2 films. Highly textured CeO2 layers were obtained on Ni-W substrates with both cerium acetate and cerium acetylacetonate as starting precursors. YBCO films with a Jc of 1.5 MA/cm2 were obtained on cerium acetylacetonate-based CeO2 films with sputtered YSZ and CeO2 cap layers.

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Studies of solution deposited cerium oxide thin films on textured Ni-alloy substrates for YBCO superconductor

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