Abstract
We have measured the thermal conductivity (κ) of bulk Y-Ba-Cu-O blocks welded with sintered Er-Ba-Cu-O and Y-Ba-Cu-O/Ag at temperatures between 5 and 300 K. For comparison, the thermal conductivity was also measured for melt-textured Y-Ba-Cu-O and Er-Ba-Cu-O. All the samples showed the enhancement of κ at around 50 K, which was commonly observed in high temperature superconductors. The maximum κ values were 90 mW/cm K for both welded Y-Ba-Cu-O and melt-textured Er-Ba-Cu-O and 150 mW/cm K for melt-textured Y-Ba-Cu-O. Such differences have originated from different microstructural features.
Original language | English |
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Pages (from-to) | 669-672 |
Number of pages | 4 |
Journal | Physica C: Superconductivity and its applications |
Volume | 392-396 |
Issue number | PART 1 |
DOIs | |
Publication status | Published - 2003 Oct |
Externally published | Yes |
Event | Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: 2002 Nov 11 → 2002 Nov 13 |
Keywords
- Er-Ba-Cu-O
- Joining
- Thermal conductivity
- Y-Ba-Cu-O bulk
- Y-Ba-Cu-O/Ag
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering