High-temperature superconducting thick films with enhanced supercurrent carrying capability

Q. X. Jia; S. R. Foltyn; P. N. Arendt; J. F. Smith

doi:10.1063/1.1455143

High-temperature superconducting thick films with enhanced supercurrent carrying capability

Q. X. Jia
, S. R. Foltyn
, P. N. Arendt
, J. F. Smith

Department of Materials Design and Innovation

Los Alamos National Laboratory

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

94 Scopus citations

Abstract

We have developed a multilayer architecture to enhance the supercurrent carrying capability of thick (>1μm) YBa₂Cu₃O _7-x (YBCO) films. An interlayer of CeO₂, which functions as a starting template for growth of subsequent high-quality YBCO layers, is used to prohibit the generation of microstructural defects that otherwise develop in the top region of thick YBCO films. Improved surface quality for a 3.3 μm thick YBCO film has been confirmed by the channeling data of Rutherford backscattering spectroscopy and by scanning electron microscopy. Compared to our routinely prepared single-layer YBCO thick film in which the supercurrent drops rapidly with increasing film thickness, this multilayer makes it possible to maintain critical current density over 1MA/cm² with less restrictions on the thickness of coated conductors.

Original language	English
Pages (from-to)	1601-1603
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	9
DOIs	https://doi.org/10.1063/1.1455143
State	Published - Mar 4 2002

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title = "High-temperature superconducting thick films with enhanced supercurrent carrying capability",

abstract = "We have developed a multilayer architecture to enhance the supercurrent carrying capability of thick (>1μm) YBa2Cu3O 7-x (YBCO) films. An interlayer of CeO2, which functions as a starting template for growth of subsequent high-quality YBCO layers, is used to prohibit the generation of microstructural defects that otherwise develop in the top region of thick YBCO films. Improved surface quality for a 3.3 μm thick YBCO film has been confirmed by the channeling data of Rutherford backscattering spectroscopy and by scanning electron microscopy. Compared to our routinely prepared single-layer YBCO thick film in which the supercurrent drops rapidly with increasing film thickness, this multilayer makes it possible to maintain critical current density over 1MA/cm2 with less restrictions on the thickness of coated conductors.",

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T1 - High-temperature superconducting thick films with enhanced supercurrent carrying capability

AU - Jia, Q. X.

AU - Foltyn, S. R.

AU - Arendt, P. N.

AU - Smith, J. F.

PY - 2002/3/4

Y1 - 2002/3/4

N2 - We have developed a multilayer architecture to enhance the supercurrent carrying capability of thick (>1μm) YBa2Cu3O 7-x (YBCO) films. An interlayer of CeO2, which functions as a starting template for growth of subsequent high-quality YBCO layers, is used to prohibit the generation of microstructural defects that otherwise develop in the top region of thick YBCO films. Improved surface quality for a 3.3 μm thick YBCO film has been confirmed by the channeling data of Rutherford backscattering spectroscopy and by scanning electron microscopy. Compared to our routinely prepared single-layer YBCO thick film in which the supercurrent drops rapidly with increasing film thickness, this multilayer makes it possible to maintain critical current density over 1MA/cm2 with less restrictions on the thickness of coated conductors.

AB - We have developed a multilayer architecture to enhance the supercurrent carrying capability of thick (>1μm) YBa2Cu3O 7-x (YBCO) films. An interlayer of CeO2, which functions as a starting template for growth of subsequent high-quality YBCO layers, is used to prohibit the generation of microstructural defects that otherwise develop in the top region of thick YBCO films. Improved surface quality for a 3.3 μm thick YBCO film has been confirmed by the channeling data of Rutherford backscattering spectroscopy and by scanning electron microscopy. Compared to our routinely prepared single-layer YBCO thick film in which the supercurrent drops rapidly with increasing film thickness, this multilayer makes it possible to maintain critical current density over 1MA/cm2 with less restrictions on the thickness of coated conductors.

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DO - 10.1063/1.1455143

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JO - Applied Physics Letters

JF - Applied Physics Letters

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High-temperature superconducting thick films with enhanced supercurrent carrying capability

Abstract

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