TY - JOUR
T1 - Magnetic levitation in liquid oxygen and its applications
AU - Muralidhar, M.
AU - Sakai, N.
AU - Jirsa, M.
AU - Murakami, M.
AU - Koshizuka, N.
N1 - Funding Information:
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.
PY - 2004/10
Y1 - 2004/10
N2 - Combination of extremely fine Gd-211 particles and the LRE/Ba solid solution pinning disorder in a melt processed (Nd0.33Eu 0.33Gd0.33)Ba2Cu3Oy, followed by an optimal oxygenation resulted in outstanding electromagnetic performance of the material. Transmission electron microscopy with energy dispersive X-ray analysis identified nanometer scale Zr-rich NEG-Ba-Cu-O particles. These were evidently responsible for a substantial increase of the critical current density at 77 K and the rise by an order of magnitude at and above 90 K. Efficient field trapping ability at 90.2 K enabled new NEG-123 magnet to be for the first time employed in levitation at liquid oxygen.
AB - Combination of extremely fine Gd-211 particles and the LRE/Ba solid solution pinning disorder in a melt processed (Nd0.33Eu 0.33Gd0.33)Ba2Cu3Oy, followed by an optimal oxygenation resulted in outstanding electromagnetic performance of the material. Transmission electron microscopy with energy dispersive X-ray analysis identified nanometer scale Zr-rich NEG-Ba-Cu-O particles. These were evidently responsible for a substantial increase of the critical current density at 77 K and the rise by an order of magnitude at and above 90 K. Efficient field trapping ability at 90.2 K enabled new NEG-123 magnet to be for the first time employed in levitation at liquid oxygen.
KW - Critical current density (J)
KW - LRE-BaCuO
KW - Levitation at 90 K for material index
KW - Melt processing
KW - TEM
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U2 - 10.1016/j.physc.2003.12.069
DO - 10.1016/j.physc.2003.12.069
M3 - Article
AN - SCOPUS:4644224535
SN - 0921-4534
VL - 412-414
SP - 739
EP - 743
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - SPEC. ISS.
ER -