Flux flow induced microwave absorption in high temperature superconductor Bi 2−XPb XSr 2Ca N−1Cu NO 4+2N
Direct measurements of microwave absorption without use of rf H field modulation in granular composites of the 115 K superconductor Bi 2−XPb XSr 2Ca N−1Cu NO 4+2N as a function of magnetic field above 0.1 T reveal a continuing increase of absorption of microwave energy increasing magnetic field. The...
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| Published in | Physics letters. A Vol. 151; no. 6; pp. 349 - 352 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
1990
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| Online Access | Get full text |
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| Summary: | Direct measurements of microwave absorption without use of rf
H field modulation in granular composites of the 115 K superconductor Bi
2−XPb
XSr
2Ca
N−1Cu
NO
4+2N as a function of magnetic field above 0.1 T reveal a continuing increase of absorption of microwave energy increasing magnetic field. The temperature and magnetic field dependence of the absorption are very different from the low magnetic field (<0.01 T) absorption arising from weak links in the material. The magnetic field and temperature dependence are consistent with the behavior of thermally activated flux flow resistance suggesting the absorption is due to flux creep. |
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| ISSN: | 0375-9601 1873-2429 |
| DOI: | 10.1016/0375-9601(90)90296-Z |