ZnO doping effects in melt-textured (Nd0.33Eu 0.39Gd0.27)Ba2Cu3Oy grown from MgO seed

M. Muralidhar; T. Kono; M. Jirsa; N. Sakai; M. Murakami; I. Hirabayashi

doi:10.1088/0953-2048/19/6/L03

ZnO doping effects in melt-textured (Nd_0.33Eu _0.39Gd_0.27)Ba₂Cu₃O_y grown from MgO seed

M. Muralidhar, T. Kono, M. Jirsa, N. Sakai, M. Murakami, I. Hirabayashi

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

We successfully grew high-quality single-grain (Nd_0.33Eu _0.39Gd_0.27)Ba₂Cu₃O_y pellets using MgO seed crystals, provided a small quantity of ZnO was added. T_c (onset) continuously decreased with growing Zn content. An optimum for ZnO, compromising good superconducting and electromagnetic properties, was 0.035 mol%. With this ZnO content, T_c>92 K, a critical current density of 100 kA cm^-2 was achieved at 77 K and 3 T, and the irreversibility field was >7 T. Perfect facet lines up to the bottom of the sample with the c-axis reflection plane appeared after the melt growth, implying a high density of the material and practically no liquid loss. Very small difference in the trapped field distribution on the top and bottom surfaces confirmed a uniform crystallographic structure and the electromagnetic properties of the pellet.

Original language	English
Pages (from-to)	L25-L28
Journal	Superconductor Science and Technology
Volume	19
Issue number	6
DOIs	https://doi.org/10.1088/0953-2048/19/6/L03
Publication status	Published - 2006 Jun 1

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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Muralidhar, M., Kono, T., Jirsa, M., Sakai, N., Murakami, M., & Hirabayashi, I. (2006). ZnO doping effects in melt-textured (Nd_0.33Eu _0.39Gd_0.27)Ba₂Cu₃O_y grown from MgO seed. Superconductor Science and Technology, 19(6), L25-L28. https://doi.org/10.1088/0953-2048/19/6/L03

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abstract = "We successfully grew high-quality single-grain (Nd0.33Eu 0.39Gd0.27)Ba2Cu3Oy pellets using MgO seed crystals, provided a small quantity of ZnO was added. Tc (onset) continuously decreased with growing Zn content. An optimum for ZnO, compromising good superconducting and electromagnetic properties, was 0.035 mol%. With this ZnO content, Tc>92 K, a critical current density of 100 kA cm-2 was achieved at 77 K and 3 T, and the irreversibility field was >7 T. Perfect facet lines up to the bottom of the sample with the c-axis reflection plane appeared after the melt growth, implying a high density of the material and practically no liquid loss. Very small difference in the trapped field distribution on the top and bottom surfaces confirmed a uniform crystallographic structure and the electromagnetic properties of the pellet.",

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AU - Muralidhar, M.

AU - Kono, T.

AU - Jirsa, M.

AU - Sakai, N.

AU - Murakami, M.

AU - Hirabayashi, I.

PY - 2006/6/1

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N2 - We successfully grew high-quality single-grain (Nd0.33Eu 0.39Gd0.27)Ba2Cu3Oy pellets using MgO seed crystals, provided a small quantity of ZnO was added. Tc (onset) continuously decreased with growing Zn content. An optimum for ZnO, compromising good superconducting and electromagnetic properties, was 0.035 mol%. With this ZnO content, Tc>92 K, a critical current density of 100 kA cm-2 was achieved at 77 K and 3 T, and the irreversibility field was >7 T. Perfect facet lines up to the bottom of the sample with the c-axis reflection plane appeared after the melt growth, implying a high density of the material and practically no liquid loss. Very small difference in the trapped field distribution on the top and bottom surfaces confirmed a uniform crystallographic structure and the electromagnetic properties of the pellet.

AB - We successfully grew high-quality single-grain (Nd0.33Eu 0.39Gd0.27)Ba2Cu3Oy pellets using MgO seed crystals, provided a small quantity of ZnO was added. Tc (onset) continuously decreased with growing Zn content. An optimum for ZnO, compromising good superconducting and electromagnetic properties, was 0.035 mol%. With this ZnO content, Tc>92 K, a critical current density of 100 kA cm-2 was achieved at 77 K and 3 T, and the irreversibility field was >7 T. Perfect facet lines up to the bottom of the sample with the c-axis reflection plane appeared after the melt growth, implying a high density of the material and practically no liquid loss. Very small difference in the trapped field distribution on the top and bottom surfaces confirmed a uniform crystallographic structure and the electromagnetic properties of the pellet.

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