| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8164784 | Physica C: Superconductivity and its Applications | 2013 | 4 Pages |
Abstract
We measured the magnetic field distribution of a high Tc bulk superconducting magnet (c-axis oriented EuBa2Cu3Oy crystals) during the magnetization process using magnetic resonance imaging. Measurements were performed in the field cooling process from 100 to 50Â K in a 4.74Â T magnetic field and in the field reducing process from 4.74 to 0Â T at 50Â K. In field cooling; we observed a significant decrease in the gradient coil efficiencies caused by the Meissner effect. Analysis of the trapped field suggested the presence of temperature gradients; microcracks; and inhomogeneity in the bulk crystals.
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Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Daiki Tamada, Takashi Nakamura, Yoshitaka Itoh, Katsumi Kose,