Abstract
Substantial field-dependent microwave absorption is found in superconducting materials of the YBa2Cu3O7 class. Abrupt changes occur over a 20-G range at zero field which are qualitatively different for polycrystalline and single-crystal materials. A strong hysteresis in polycrystalline samples is quenched by modulation fields of 0.2 Gpp. Formally the dissipative processes observed may be described in terms of flux relaxation, but the underlying physical mechanisms remain unresolved. As measurements on 100 g specimens can be performed in a few seconds, this property may prove useful for material characterization.
| Original language | English |
|---|---|
| Pages (from-to) | 7491-7495 |
| Number of pages | 5 |
| Journal | Physical Review B |
| Volume | 37 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1 Jan 1988 |
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Field-dependent microwave absorption in high-Tc superconductors. / Glarum, S. H.; Marshall, J. H.; Schneemeyer, Lynn.
In: Physical Review B, Vol. 37, No. 13, 01.01.1988, p. 7491-7495.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Field-dependent microwave absorption in high-Tc superconductors
AU - Glarum, S. H.
AU - Marshall, J. H.
AU - Schneemeyer, Lynn
PY - 1988/1/1
Y1 - 1988/1/1
N2 - Substantial field-dependent microwave absorption is found in superconducting materials of the YBa2Cu3O7 class. Abrupt changes occur over a 20-G range at zero field which are qualitatively different for polycrystalline and single-crystal materials. A strong hysteresis in polycrystalline samples is quenched by modulation fields of 0.2 Gpp. Formally the dissipative processes observed may be described in terms of flux relaxation, but the underlying physical mechanisms remain unresolved. As measurements on 100 g specimens can be performed in a few seconds, this property may prove useful for material characterization.
AB - Substantial field-dependent microwave absorption is found in superconducting materials of the YBa2Cu3O7 class. Abrupt changes occur over a 20-G range at zero field which are qualitatively different for polycrystalline and single-crystal materials. A strong hysteresis in polycrystalline samples is quenched by modulation fields of 0.2 Gpp. Formally the dissipative processes observed may be described in terms of flux relaxation, but the underlying physical mechanisms remain unresolved. As measurements on 100 g specimens can be performed in a few seconds, this property may prove useful for material characterization.
UR - http://www.scopus.com/inward/record.url?scp=4243084254&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.37.7491
DO - 10.1103/PhysRevB.37.7491
M3 - Article
VL - 37
SP - 7491
EP - 7495
JO - Physical Review B
JF - Physical Review B
SN - 0163-1829
IS - 13
ER -