Controlled nanoparticulate flux pinning structures in RE1+xBa2-xCu3Oy films

Y. Yoshida; K. Matsumoto; M. Miura; Y. Ichino; Y. Takai; A. Ichinose; M. Mukaida; S. Horii

doi:10.1016/j.physc.2006.04.059

Controlled nanoparticulate flux pinning structures in RE_1+xBa_2-xCu₃O_y films

Y. Yoshida, K. Matsumoto, M. Miura, Y. Ichino, Y. Takai, A. Ichinose, M. Mukaida, S. Horii

Advanced Materials Physics

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

10 Citations (Scopus)

Abstract

Practical utilization of a coated conductor as a superconducting magnet operating at 77 K requires not only an improvement in the J_c at self field but also suppression of any decline in the J_c value in the magnetic field. In this study, nanoparticles and crystalline defects were created as the flux pinning in a high-J_c Sm_1+xBa_2-xCu₃O_y film during a film deposition process. We obtained extremely high-J_c values, J_c = 0.37 MA/cm² (77 K, B∥c, B = 5 T) and J_c = 0.1 MA/cm² (77 K, B∥c, B = 8 T). Cross-sectional low magnification and high-resolution TEM micrographs confirm the presence of Sm-enriched nanoparticles (x value > 0.2) embedded in the SmBCO lattice; typical particle sizes were 15 nm and particle density about 10¹⁰-10¹¹ particles cm^-2. We discussed about the elemental mapping of the high-J_c SmBCO films measured by TEM-EDX.

Original language	English
Pages (from-to)	637-642
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	445-448
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physc.2006.04.059
Publication status	Published - Oct 1 2006

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "Controlled nanoparticulate flux pinning structures in RE1+xBa2-xCu3Oy films",

abstract = "Practical utilization of a coated conductor as a superconducting magnet operating at 77 K requires not only an improvement in the Jc at self field but also suppression of any decline in the Jc value in the magnetic field. In this study, nanoparticles and crystalline defects were created as the flux pinning in a high-Jc Sm1+xBa2-xCu3Oy film during a film deposition process. We obtained extremely high-Jc values, Jc = 0.37 MA/cm2 (77 K, B∥c, B = 5 T) and Jc = 0.1 MA/cm2 (77 K, B∥c, B = 8 T). Cross-sectional low magnification and high-resolution TEM micrographs confirm the presence of Sm-enriched nanoparticles (x value > 0.2) embedded in the SmBCO lattice; typical particle sizes were 15 nm and particle density about 1010-1011 particles cm-2. We discussed about the elemental mapping of the high-Jc SmBCO films measured by TEM-EDX.",

author = "Y. Yoshida and K. Matsumoto and M. Miura and Y. Ichino and Y. Takai and A. Ichinose and M. Mukaida and S. Horii",

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T1 - Controlled nanoparticulate flux pinning structures in RE1+xBa2-xCu3Oy films

AU - Yoshida, Y.

AU - Matsumoto, K.

AU - Miura, M.

AU - Ichino, Y.

AU - Takai, Y.

AU - Ichinose, A.

AU - Mukaida, M.

AU - Horii, S.

PY - 2006/10/1

Y1 - 2006/10/1

N2 - Practical utilization of a coated conductor as a superconducting magnet operating at 77 K requires not only an improvement in the Jc at self field but also suppression of any decline in the Jc value in the magnetic field. In this study, nanoparticles and crystalline defects were created as the flux pinning in a high-Jc Sm1+xBa2-xCu3Oy film during a film deposition process. We obtained extremely high-Jc values, Jc = 0.37 MA/cm2 (77 K, B∥c, B = 5 T) and Jc = 0.1 MA/cm2 (77 K, B∥c, B = 8 T). Cross-sectional low magnification and high-resolution TEM micrographs confirm the presence of Sm-enriched nanoparticles (x value > 0.2) embedded in the SmBCO lattice; typical particle sizes were 15 nm and particle density about 1010-1011 particles cm-2. We discussed about the elemental mapping of the high-Jc SmBCO films measured by TEM-EDX.

AB - Practical utilization of a coated conductor as a superconducting magnet operating at 77 K requires not only an improvement in the Jc at self field but also suppression of any decline in the Jc value in the magnetic field. In this study, nanoparticles and crystalline defects were created as the flux pinning in a high-Jc Sm1+xBa2-xCu3Oy film during a film deposition process. We obtained extremely high-Jc values, Jc = 0.37 MA/cm2 (77 K, B∥c, B = 5 T) and Jc = 0.1 MA/cm2 (77 K, B∥c, B = 8 T). Cross-sectional low magnification and high-resolution TEM micrographs confirm the presence of Sm-enriched nanoparticles (x value > 0.2) embedded in the SmBCO lattice; typical particle sizes were 15 nm and particle density about 1010-1011 particles cm-2. We discussed about the elemental mapping of the high-Jc SmBCO films measured by TEM-EDX.

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