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.
Original language | English |
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Pages (from-to) | L25-L28 |
Journal | Superconductor Science and Technology |
Volume | 19 |
Issue number | 6 |
DOIs | |
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