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Title: Optimization of the Dy Content in Single Crystalline GdBCO Bulk Superconductors Fabricated in Air Via Top-Seeded Infiltration Growth Process

Abstract

Single-crystalline bulk GdBa{sub 2}Cu{sub 3}O{sub 7−δ} (GdBCO) superconductors were fabricated with top-seeded infiltration-growth technique (TSIG) in air by adding the different amounts of Dy{sub 2}BaCuO{sub 5} (Dy-211) particles (5, 10, 15, 20, 25, 30, 35, and 40 wt%). All the samples show superconducting critical temperature at ∼93 K with sharp transition irrespective of the chemical composition. X-ray diffraction measurements confirmed that all the samples were single domain with high alignment. Microstructural studies through scanning electron microscopy showed that TSIG-processed GdBCO samples contained 211 phase particles of two different sizes, i.e., ∼2–4 and ∼10 μ m. The addition of Dy-211 phase particles led to a significant enhancement of critical current density (J{sub c}) at 77 K. GdBCO superconductor with the addition of 20 wt% of Dy-211 showed the highest J{sub c} of 45.5 kA/cm {sup 2} at 77 K and self field.

Authors:
; ;  [1]
  1. Shibaura Institute of Technology, Superconducting Materials Laboratory, Graduate School of Science and Engineering (Japan)
Publication Date:
OSTI Identifier:
22776975
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 4; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AIR; BARIUM COMPOUNDS; CHEMICAL COMPOSITION; CRITICAL CURRENT; CRITICAL TEMPERATURE; CRYSTAL GROWTH; CUPRATES; DYSPROSIUM; GADOLINIUM COMPOUNDS; MICROSTRUCTURE; MONOCRYSTALS; OPTIMIZATION; SCANNING ELECTRON MICROSCOPY; SUPERCONDUCTORS; X-RAY DIFFRACTION

Citation Formats

Pavan Kumar Naik, S., Muralidhar, M., E-mail: miryala26@gmail.com, and Murakami, M. Optimization of the Dy Content in Single Crystalline GdBCO Bulk Superconductors Fabricated in Air Via Top-Seeded Infiltration Growth Process. United States: N. p., 2018. Web. doi:10.1007/S10948-017-4277-0.
Pavan Kumar Naik, S., Muralidhar, M., E-mail: miryala26@gmail.com, & Murakami, M. Optimization of the Dy Content in Single Crystalline GdBCO Bulk Superconductors Fabricated in Air Via Top-Seeded Infiltration Growth Process. United States. doi:10.1007/S10948-017-4277-0.
Pavan Kumar Naik, S., Muralidhar, M., E-mail: miryala26@gmail.com, and Murakami, M. Sun . "Optimization of the Dy Content in Single Crystalline GdBCO Bulk Superconductors Fabricated in Air Via Top-Seeded Infiltration Growth Process". United States. doi:10.1007/S10948-017-4277-0.
@article{osti_22776975,
title = {Optimization of the Dy Content in Single Crystalline GdBCO Bulk Superconductors Fabricated in Air Via Top-Seeded Infiltration Growth Process},
author = {Pavan Kumar Naik, S. and Muralidhar, M., E-mail: miryala26@gmail.com and Murakami, M.},
abstractNote = {Single-crystalline bulk GdBa{sub 2}Cu{sub 3}O{sub 7−δ} (GdBCO) superconductors were fabricated with top-seeded infiltration-growth technique (TSIG) in air by adding the different amounts of Dy{sub 2}BaCuO{sub 5} (Dy-211) particles (5, 10, 15, 20, 25, 30, 35, and 40 wt%). All the samples show superconducting critical temperature at ∼93 K with sharp transition irrespective of the chemical composition. X-ray diffraction measurements confirmed that all the samples were single domain with high alignment. Microstructural studies through scanning electron microscopy showed that TSIG-processed GdBCO samples contained 211 phase particles of two different sizes, i.e., ∼2–4 and ∼10 μ m. The addition of Dy-211 phase particles led to a significant enhancement of critical current density (J{sub c}) at 77 K. GdBCO superconductor with the addition of 20 wt% of Dy-211 showed the highest J{sub c} of 45.5 kA/cm {sup 2} at 77 K and self field.},
doi = {10.1007/S10948-017-4277-0},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 4,
volume = 31,
place = {United States},
year = {2018},
month = {4}
}