TY - JOUR
T1 - Field trapping and magnetic levitation performances of large single-grain Gd-Ba-Cu-O at different temperatures
AU - Nariki, S.
AU - Fujikura, M.
AU - Sakai, N.
AU - Hirabayashi, I.
AU - Murakami, M.
N1 - Funding Information:
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO).
PY - 2005/10/1
Y1 - 2005/10/1
N2 - We measured the temperature dependence of the trapped field and the magnetic levitation force for c-axis-oriented single-grain Gd-Ba-Cu-O bulk samples 48 mm in diameter. Trapped magnetic field of the samples was 2.1-2.2 T at 77 K and increased with decreasing temperature and reached 4.1 T at 70 K, however the sample fractured during the measurements at lower temperatures due to a large electromagnetic force. The reinforcement by a metal ring was effective in improving the mechanical strength. The sample encapsulated in an Al ring could trap a very high magnetic field of 9.0 T at 50 K. In liquid O 2 the Gd-Ba-Cu-O bulk exhibited a trapped field of 0.42 T and a magnetic levitation force about a half value of that in liquid N2.
AB - We measured the temperature dependence of the trapped field and the magnetic levitation force for c-axis-oriented single-grain Gd-Ba-Cu-O bulk samples 48 mm in diameter. Trapped magnetic field of the samples was 2.1-2.2 T at 77 K and increased with decreasing temperature and reached 4.1 T at 70 K, however the sample fractured during the measurements at lower temperatures due to a large electromagnetic force. The reinforcement by a metal ring was effective in improving the mechanical strength. The sample encapsulated in an Al ring could trap a very high magnetic field of 9.0 T at 50 K. In liquid O 2 the Gd-Ba-Cu-O bulk exhibited a trapped field of 0.42 T and a magnetic levitation force about a half value of that in liquid N2.
KW - Magnetic levitation force Gd-Ba-Cu-O
KW - Melt-textured bulk
KW - Trapped magnetic field
KW - liquid O
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U2 - 10.1016/j.physc.2005.01.042
DO - 10.1016/j.physc.2005.01.042
M3 - Conference article
AN - SCOPUS:25644454352
SN - 0921-4534
VL - 426-431
SP - 654
EP - 659
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - I
T2 - Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity
Y2 - 23 November 2004 through 25 November 2004
ER -