Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 654-659 |
| Number of pages | 6 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 426-431 |
| Issue number | I |
| DOIs | |
| Publication status | Published - 2005 Oct 1 |
| Event | Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity - Duration: 2004 Nov 23 → 2004 Nov 25 |
Keywords
- Magnetic levitation force Gd-Ba-Cu-O
- Melt-textured bulk
- Trapped magnetic field
- liquid O
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering