Abstract
A long-term Zr2O3 ball milling of Gd2BaCuO5 secondary phase particles dispersed in the melt-textured (Nd0.33Eu0.33Gd0.33) Ba2Cu3Oy (NEG-123) compound brought a superb enhancement of electromagnetic performance of this composite at high temperatures: at 77.3 K, Jc reached 192 kA cm-2, at 90.2 K (temperature of liquid oxygen) the remnant Jc was 40 kA cm-2, a value high enough for levitation experiments. Energy dispersive x-ray analysis found small Zr-rich secondary phase particles of only 20-50 nm in size, while the mean particle size after the milling was 70-200 nm, according to the milling time. This new particle size reduction mechanism enables the design of non-contact liquid oxygen pumps for industrial applications.
| Original language | English |
|---|---|
| Journal | Superconductor Science and Technology |
| Volume | 16 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2003 Nov |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Levitation of NEG-123 at the temperature of liquid oxygen (90.2 K). / Miryala, Muralidhar; Sakai, Naomichi; Jirsa, M.; Murakami, Masato; Koshizuka, N.
In: Superconductor Science and Technology, Vol. 16, No. 11, 11.2003.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Levitation of NEG-123 at the temperature of liquid oxygen (90.2 K)
AU - Miryala, Muralidhar
AU - Sakai, Naomichi
AU - Jirsa, M.
AU - Murakami, Masato
AU - Koshizuka, N.
PY - 2003/11
Y1 - 2003/11
N2 - A long-term Zr2O3 ball milling of Gd2BaCuO5 secondary phase particles dispersed in the melt-textured (Nd0.33Eu0.33Gd0.33) Ba2Cu3Oy (NEG-123) compound brought a superb enhancement of electromagnetic performance of this composite at high temperatures: at 77.3 K, Jc reached 192 kA cm-2, at 90.2 K (temperature of liquid oxygen) the remnant Jc was 40 kA cm-2, a value high enough for levitation experiments. Energy dispersive x-ray analysis found small Zr-rich secondary phase particles of only 20-50 nm in size, while the mean particle size after the milling was 70-200 nm, according to the milling time. This new particle size reduction mechanism enables the design of non-contact liquid oxygen pumps for industrial applications.
AB - A long-term Zr2O3 ball milling of Gd2BaCuO5 secondary phase particles dispersed in the melt-textured (Nd0.33Eu0.33Gd0.33) Ba2Cu3Oy (NEG-123) compound brought a superb enhancement of electromagnetic performance of this composite at high temperatures: at 77.3 K, Jc reached 192 kA cm-2, at 90.2 K (temperature of liquid oxygen) the remnant Jc was 40 kA cm-2, a value high enough for levitation experiments. Energy dispersive x-ray analysis found small Zr-rich secondary phase particles of only 20-50 nm in size, while the mean particle size after the milling was 70-200 nm, according to the milling time. This new particle size reduction mechanism enables the design of non-contact liquid oxygen pumps for industrial applications.
UR - http://www.scopus.com/inward/record.url?scp=0345714968&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0345714968&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/16/11/L04
DO - 10.1088/0953-2048/16/11/L04
M3 - Article
VL - 16
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 11
ER -