Enhancement of Jc by 211 particles in ternary (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy melt-processed superconductors

M. Muralidhar; M. R. Koblischka; P. Diko; M. Murakami

doi:10.1063/1.125666

Enhancement of J_c by 211 particles in ternary (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu ₃O_y melt-processed superconductors

M. Muralidhar, M. R. Koblischka, P. Diko, M. Murakami

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

56 Citations (Scopus)

Abstract

(Nd_0.33Eu_0.33Gd_0.33)₂BaCuO ₅ (NEG-211) particles are added to ternary (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu ₃O_y (NEG) bulk, melt-processed superconductors. By means of transmission electron and polarized light microscopy, we found that two types of 211 particles are formed; large NEG-211 and submicron-sized particles containing mostly Gd in the rare earth site are formed which can act as effective flux pinning sites. The critical current density at zero field increases monotonously as a function of the NEG-211 concentration, but the secondary peak vanishes above 40 mol % 211 addition. As a result, a critical current density of 68 000 A cm^-2 at 77 K and 2.5 T applied field is achieved with at 40 mol % 211 additions.

Original language	English
Pages (from-to)	91-93
Number of pages	3
Journal	Applied Physics Letters
Volume	76
Issue number	1
DOIs	https://doi.org/10.1063/1.125666
Publication status	Published - 2000 Jan 3
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Enhancement of Jc by 211 particles in ternary (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy melt-processed superconductors",

abstract = "(Nd0.33Eu0.33Gd0.33)2BaCuO 5 (NEG-211) particles are added to ternary (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG) bulk, melt-processed superconductors. By means of transmission electron and polarized light microscopy, we found that two types of 211 particles are formed; large NEG-211 and submicron-sized particles containing mostly Gd in the rare earth site are formed which can act as effective flux pinning sites. The critical current density at zero field increases monotonously as a function of the NEG-211 concentration, but the secondary peak vanishes above 40 mol % 211 addition. As a result, a critical current density of 68 000 A cm-2 at 77 K and 2.5 T applied field is achieved with at 40 mol % 211 additions.",

author = "M. Muralidhar and Koblischka, {M. R.} and P. Diko and M. Murakami",

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T1 - Enhancement of Jc by 211 particles in ternary (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy melt-processed superconductors

AU - Muralidhar, M.

AU - Koblischka, M. R.

AU - Diko, P.

AU - Murakami, M.

PY - 2000/1/3

Y1 - 2000/1/3

N2 - (Nd0.33Eu0.33Gd0.33)2BaCuO 5 (NEG-211) particles are added to ternary (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG) bulk, melt-processed superconductors. By means of transmission electron and polarized light microscopy, we found that two types of 211 particles are formed; large NEG-211 and submicron-sized particles containing mostly Gd in the rare earth site are formed which can act as effective flux pinning sites. The critical current density at zero field increases monotonously as a function of the NEG-211 concentration, but the secondary peak vanishes above 40 mol % 211 addition. As a result, a critical current density of 68 000 A cm-2 at 77 K and 2.5 T applied field is achieved with at 40 mol % 211 additions.

AB - (Nd0.33Eu0.33Gd0.33)2BaCuO 5 (NEG-211) particles are added to ternary (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG) bulk, melt-processed superconductors. By means of transmission electron and polarized light microscopy, we found that two types of 211 particles are formed; large NEG-211 and submicron-sized particles containing mostly Gd in the rare earth site are formed which can act as effective flux pinning sites. The critical current density at zero field increases monotonously as a function of the NEG-211 concentration, but the secondary peak vanishes above 40 mol % 211 addition. As a result, a critical current density of 68 000 A cm-2 at 77 K and 2.5 T applied field is achieved with at 40 mol % 211 additions.

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Enhancement of J_c by 211 particles in ternary (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu ₃O_y melt-processed superconductors

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