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

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ASJC Scopus subject areas

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

Cite this

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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AU - Jirsa, M.

AU - Sakai, N.

AU - Murakami, M.

AU - Hirabayashi, I.

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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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10.1088/0953-2048/19/6/L03