Three-dimensional analysis of BaZrO3 pinning centers gives isotropic superconductivity in GdBa2 Cu3 O 7-δ

K. Kaneko; K. Furuya; K. Yamada; S. Sadayama; J. S. Barnard; P. A. Midgley; T. Kato; T. Hirayama; M. Kiuchi; T. Matsushita; A. Ibi; Y. Yamada; T. Izumi; Y. Shiohara

doi:10.1063/1.3486213

Three-dimensional analysis of BaZrO₃ pinning centers gives isotropic superconductivity in GdBa₂ Cu₃ O _7-δ

K. Kaneko, K. Furuya, K. Yamada, S. Sadayama, J. S. Barnard, P. A. Midgley, T. Kato, T. Hirayama, M. Kiuchi, T. Matsushita, A. Ibi, Y. Yamada, T. Izumi, Y. Shiohara

Division for Experimental Natural Science

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Abstract

BaZrO₃ doped GdBa₂ Cu₃ O _7-δ superconductor was prepared by pulsed layer deposition using a KrF excimer laser, which showed isotropic characteristics of critical current density, J_C, for magnetic-field orientations, ∼4.0× 109 A m^-2 at 1.0 T. Microstructural and morphological characterization of resulting artificial pinning centers were conducted by transmission electron microscopy and electron tomography, which confirmed the presence of one-dimensional artificial pinning centers, BaZrO₃ nanorods. Since there is noticeable anisotropy from GdBa₂ Cu ₃ O_7-δ superconductor without doping BaZrO ₃, the pinning observed for all magnetic-field orientations are due to the high density and high dispersion of these BaZrO₃ nanorods with very wide angular distributions.

Original language	English
Article number	063901
Journal	Journal of Applied Physics
Volume	108
Issue number	6
DOIs	https://doi.org/10.1063/1.3486213
Publication status	Published - Sept 15 2010

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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Kaneko, K., Furuya, K., Yamada, K., Sadayama, S., Barnard, J. S., Midgley, P. A., Kato, T., Hirayama, T., Kiuchi, M., Matsushita, T., Ibi, A., Yamada, Y., Izumi, T., & Shiohara, Y. (2010). Three-dimensional analysis of BaZrO₃ pinning centers gives isotropic superconductivity in GdBa₂ Cu₃ O _7-δ. Journal of Applied Physics, 108(6), [063901]. https://doi.org/10.1063/1.3486213

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title = "Three-dimensional analysis of BaZrO3 pinning centers gives isotropic superconductivity in GdBa2 Cu3 O 7-δ",

abstract = "BaZrO3 doped GdBa2 Cu3 O 7-δ superconductor was prepared by pulsed layer deposition using a KrF excimer laser, which showed isotropic characteristics of critical current density, JC, for magnetic-field orientations, ∼4.0× 109 A m-2 at 1.0 T. Microstructural and morphological characterization of resulting artificial pinning centers were conducted by transmission electron microscopy and electron tomography, which confirmed the presence of one-dimensional artificial pinning centers, BaZrO3 nanorods. Since there is noticeable anisotropy from GdBa2 Cu 3 O7-δ superconductor without doping BaZrO 3, the pinning observed for all magnetic-field orientations are due to the high density and high dispersion of these BaZrO3 nanorods with very wide angular distributions.",

author = "K. Kaneko and K. Furuya and K. Yamada and S. Sadayama and Barnard, {J. S.} and Midgley, {P. A.} and T. Kato and T. Hirayama and M. Kiuchi and T. Matsushita and A. Ibi and Y. Yamada and T. Izumi and Y. Shiohara",

note = "Funding Information: We gratefully acknowledge the financial support of a Scientific Research Grant from the Ministry of Education, Culture, Sports, Science and Technology of Japan and by New Energy and Industrial Technology Development Organization (NEDO) as the project for Development of Materials & Power Application of Coated Conductors. P.A.M. thanks the Isaac Newton Trust for funding and the Royal Academy of Engineering and the Leverhulme Trust for the award of Senior Research Fellowships.",

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doi = "10.1063/1.3486213",

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T1 - Three-dimensional analysis of BaZrO3 pinning centers gives isotropic superconductivity in GdBa2 Cu3 O 7-δ

AU - Kaneko, K.

AU - Furuya, K.

AU - Yamada, K.

AU - Sadayama, S.

AU - Barnard, J. S.

AU - Midgley, P. A.

AU - Kato, T.

AU - Hirayama, T.

AU - Kiuchi, M.

AU - Matsushita, T.

AU - Ibi, A.

AU - Yamada, Y.

AU - Izumi, T.

AU - Shiohara, Y.

N1 - Funding Information: We gratefully acknowledge the financial support of a Scientific Research Grant from the Ministry of Education, Culture, Sports, Science and Technology of Japan and by New Energy and Industrial Technology Development Organization (NEDO) as the project for Development of Materials & Power Application of Coated Conductors. P.A.M. thanks the Isaac Newton Trust for funding and the Royal Academy of Engineering and the Leverhulme Trust for the award of Senior Research Fellowships.

PY - 2010/9/15

Y1 - 2010/9/15

N2 - BaZrO3 doped GdBa2 Cu3 O 7-δ superconductor was prepared by pulsed layer deposition using a KrF excimer laser, which showed isotropic characteristics of critical current density, JC, for magnetic-field orientations, ∼4.0× 109 A m-2 at 1.0 T. Microstructural and morphological characterization of resulting artificial pinning centers were conducted by transmission electron microscopy and electron tomography, which confirmed the presence of one-dimensional artificial pinning centers, BaZrO3 nanorods. Since there is noticeable anisotropy from GdBa2 Cu 3 O7-δ superconductor without doping BaZrO 3, the pinning observed for all magnetic-field orientations are due to the high density and high dispersion of these BaZrO3 nanorods with very wide angular distributions.

AB - BaZrO3 doped GdBa2 Cu3 O 7-δ superconductor was prepared by pulsed layer deposition using a KrF excimer laser, which showed isotropic characteristics of critical current density, JC, for magnetic-field orientations, ∼4.0× 109 A m-2 at 1.0 T. Microstructural and morphological characterization of resulting artificial pinning centers were conducted by transmission electron microscopy and electron tomography, which confirmed the presence of one-dimensional artificial pinning centers, BaZrO3 nanorods. Since there is noticeable anisotropy from GdBa2 Cu 3 O7-δ superconductor without doping BaZrO 3, the pinning observed for all magnetic-field orientations are due to the high density and high dispersion of these BaZrO3 nanorods with very wide angular distributions.

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Three-dimensional analysis of BaZrO₃ pinning centers gives isotropic superconductivity in GdBa₂ Cu₃ O _7-δ

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