Low angle grain boundary transport properties of undoped and doped Y123 thin film bicrystals

Bernhard Holzapfel; Darren Verebelyi; Claudia Cantoni; M. Paranthaman; B. Sales; Ron Feenstra; Dave Christen; David P. Norton

doi:10.1016/S0921-4534(00)00973-4

Low angle grain boundary transport properties of undoped and doped Y123 thin film bicrystals

Bernhard Holzapfel, Darren Verebelyi, Claudia Cantoni, M. Paranthaman, B. Sales, Ron Feenstra, Dave Christen, David P. Norton

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

25 Scopus citations

Abstract

Undoped and Ca- or Ag-doped YBa₂Cu₃O_x (Y123) thin films were prepared by pulsed laser deposition on symmetric low angle SrTiO₃ bicrystals (4, 8, 12, 16 degree misorientation angle). The electrical transport properties of the inter- and intragrain critical current densities and V-I curves were investigated at 77K in magnetic fields up to 6T. Ca-doped Y123 bicrystal films (10 % Ca substitution) showed no significant j_c-enhancement at 77K in zero field but a strongly decreased j_c at higher magnetic fields due to a reduced irreversibility field at 77K. Ag-doped Y123 bicrystal films showed increased critical current densities at higher fields and a slightly shifted transition from strong to weak link behavior compared to undoped Y123 bicrystal films.

Original language	English
Pages (from-to)	1431-1434
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	341-348
Issue number	PART 2
DOIs	https://doi.org/10.1016/S0921-4534(00)00973-4
State	Published - 2000

Funding

This work was supported by the Deutsche Forsehungsgemeinsehafi (DFG).

Funders	Funder number
Deutsche Forsehungsgemeinsehafi

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10.1016/S0921-4534(00)00973-4

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title = "Low angle grain boundary transport properties of undoped and doped Y123 thin film bicrystals",

abstract = "Undoped and Ca- or Ag-doped YBa2Cu3Ox (Y123) thin films were prepared by pulsed laser deposition on symmetric low angle SrTiO3 bicrystals (4, 8, 12, 16 degree misorientation angle). The electrical transport properties of the inter- and intragrain critical current densities and V-I curves were investigated at 77K in magnetic fields up to 6T. Ca-doped Y123 bicrystal films (10 % Ca substitution) showed no significant jc-enhancement at 77K in zero field but a strongly decreased jc at higher magnetic fields due to a reduced irreversibility field at 77K. Ag-doped Y123 bicrystal films showed increased critical current densities at higher fields and a slightly shifted transition from strong to weak link behavior compared to undoped Y123 bicrystal films.",

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T1 - Low angle grain boundary transport properties of undoped and doped Y123 thin film bicrystals

AU - Holzapfel, Bernhard

AU - Verebelyi, Darren

AU - Cantoni, Claudia

AU - Paranthaman, M.

AU - Sales, B.

AU - Feenstra, Ron

AU - Christen, Dave

AU - Norton, David P.

PY - 2000

Y1 - 2000

N2 - Undoped and Ca- or Ag-doped YBa2Cu3Ox (Y123) thin films were prepared by pulsed laser deposition on symmetric low angle SrTiO3 bicrystals (4, 8, 12, 16 degree misorientation angle). The electrical transport properties of the inter- and intragrain critical current densities and V-I curves were investigated at 77K in magnetic fields up to 6T. Ca-doped Y123 bicrystal films (10 % Ca substitution) showed no significant jc-enhancement at 77K in zero field but a strongly decreased jc at higher magnetic fields due to a reduced irreversibility field at 77K. Ag-doped Y123 bicrystal films showed increased critical current densities at higher fields and a slightly shifted transition from strong to weak link behavior compared to undoped Y123 bicrystal films.

AB - Undoped and Ca- or Ag-doped YBa2Cu3Ox (Y123) thin films were prepared by pulsed laser deposition on symmetric low angle SrTiO3 bicrystals (4, 8, 12, 16 degree misorientation angle). The electrical transport properties of the inter- and intragrain critical current densities and V-I curves were investigated at 77K in magnetic fields up to 6T. Ca-doped Y123 bicrystal films (10 % Ca substitution) showed no significant jc-enhancement at 77K in zero field but a strongly decreased jc at higher magnetic fields due to a reduced irreversibility field at 77K. Ag-doped Y123 bicrystal films showed increased critical current densities at higher fields and a slightly shifted transition from strong to weak link behavior compared to undoped Y123 bicrystal films.

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U2 - 10.1016/S0921-4534(00)00973-4

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IS - PART 2

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Low angle grain boundary transport properties of undoped and doped Y123 thin film bicrystals

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