Abstract
The peak effect in melt-processed (Sm, Eu, Gd)Ba2Cu3O7-δ crystals was investigated by rotating the angle θ, between applied fields, Ba, and the a-b plane. For Ba ∥ c, the scaling of the pinning force over a wide temperature range showed that the predominant pinning is δTc style pinning. A linear temperature dependence of the peak field, Bp, at which the magnetic moment showed a secondary peak was observed in the magnetic phase diagram. At 85 K, Bp shifted to a higher field, associated with a systematic decrease of the peak amplitude with θ reaching zero. For Ba ∥ ab, the peak effect displayed the highest peak field and the minimum peak height. An ordering compositional fluctuation was observed both in- and out-of-plane by transmission electron microscopy. Such a 3D distribution of chemical variation could account for the angular dependence of the peak effect.
| Original language | English |
|---|---|
| Journal | Superconductor Science and Technology |
| Volume | 17 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2004 Feb |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Peak effect with tilted fields in melt-processed (Sm, Eu, Gd)Ba2Cu3O7-δ superconductors. / Hu, A.; Zhou, H.; Chikumoto, N.; Sakai, Naomichi; Hirabayashi, I.; Murakami, Masato.
In: Superconductor Science and Technology, Vol. 17, No. 2, 02.2004.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Peak effect with tilted fields in melt-processed (Sm, Eu, Gd)Ba2Cu3O7-δ superconductors
AU - Hu, A.
AU - Zhou, H.
AU - Chikumoto, N.
AU - Sakai, Naomichi
AU - Hirabayashi, I.
AU - Murakami, Masato
PY - 2004/2
Y1 - 2004/2
N2 - The peak effect in melt-processed (Sm, Eu, Gd)Ba2Cu3O7-δ crystals was investigated by rotating the angle θ, between applied fields, Ba, and the a-b plane. For Ba ∥ c, the scaling of the pinning force over a wide temperature range showed that the predominant pinning is δTc style pinning. A linear temperature dependence of the peak field, Bp, at which the magnetic moment showed a secondary peak was observed in the magnetic phase diagram. At 85 K, Bp shifted to a higher field, associated with a systematic decrease of the peak amplitude with θ reaching zero. For Ba ∥ ab, the peak effect displayed the highest peak field and the minimum peak height. An ordering compositional fluctuation was observed both in- and out-of-plane by transmission electron microscopy. Such a 3D distribution of chemical variation could account for the angular dependence of the peak effect.
AB - The peak effect in melt-processed (Sm, Eu, Gd)Ba2Cu3O7-δ crystals was investigated by rotating the angle θ, between applied fields, Ba, and the a-b plane. For Ba ∥ c, the scaling of the pinning force over a wide temperature range showed that the predominant pinning is δTc style pinning. A linear temperature dependence of the peak field, Bp, at which the magnetic moment showed a secondary peak was observed in the magnetic phase diagram. At 85 K, Bp shifted to a higher field, associated with a systematic decrease of the peak amplitude with θ reaching zero. For Ba ∥ ab, the peak effect displayed the highest peak field and the minimum peak height. An ordering compositional fluctuation was observed both in- and out-of-plane by transmission electron microscopy. Such a 3D distribution of chemical variation could account for the angular dependence of the peak effect.
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UR - http://www.scopus.com/inward/citedby.url?scp=1342263613&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/17/2/062
DO - 10.1088/0953-2048/17/2/062
M3 - Article
AN - SCOPUS:1342263613
VL - 17
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 2
ER -