Levitation of NEG-123 at the temperature of liquid oxygen (90.2 K)

Research output: Contribution to journalArticle

28 Citations (Scopus)

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 languageEnglish
JournalSuperconductor Science and Technology
Volume16
Issue number11
DOIs
Publication statusPublished - 2003 Nov

Fingerprint

liquid oxygen
levitation
Particle size
Oxygen
Ball milling
Liquids
Industrial applications
Pumps
X rays
x ray analysis
Temperature
temperature
Composite materials
balls
Experiments
pumps
electromagnetism
composite materials
augmentation
energy

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 journalArticle

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