Trapped Field in Different Shapes of RE-Ba-Cu-O Single Grains for the Use in Production of Superconducting Bearings

Author

Hlasek, Tomas ; Plechacek, Vladimir

Author_Institution

CAN Supercond. s.r.o., Kamenice, Czech Republic

Volume

25

Issue

3

fYear

2015

fDate

Jun-15

Firstpage

1

Lastpage

4

Abstract

Since the discovery of stable levitation in type II superconductors, the number of applications of superconducting magnetic bearings for contactless machinery and devices has increased significantly. These applications require that large single grains of different shapes are used. For the batch process of large single grains we have used the top-seeded melt growth (TSMG) method in air with commercial Nd123/MgO thin films as seed crystals. In this work we present a study of trapped field maps in different shapes of RE-Ba-Cu-O (RE = Y, Gd) single grains. We also investigated the influence of oxidation conditions on material behavior during its processing into desired shapes and trapped field.

Keywords

barium compounds; crystal growth from melt; gadolinium compounds; high-temperature superconductors; machine bearings; oxidation; superconducting magnets; yttrium compounds; GdBaCuO; Nd123-MgO thin films; RE-Ba-Cu-O single grain shapes; YBaCuO; batch process; contactless machinery; material behavior; oxidation conditions; seed crystals; stable levitation; superconducting magnetic bearings; top-seeded melt growth method; trapped field maps; type II superconductors; Batch production systems; Powders; Shape; Superconducting magnets; Yttrium barium copper oxide; Batch process; RE-Ba-Cu-O single grain; superconducting bearings; trapped field maps;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2014.2364977

Filename

6939635