Abstract
Flux pinning properties were investigated by focusing on the origin of the high peak critical current density and the high irreversibility field for Nd0.33Eu0.38Gd0.28Ba2Cu 3Oy (NEG-123) bulk superconductors with the addition of 211 secondary phase particles of volume fractions up to 10mol%. It was found that a negative correlation exists between the peak critical current density Jcp and the irreversibility field Bi for various fractions of added 211 phase. This suggests that the mechanisms that determine J cp and Bi are different. The 211 particles do not contribute to the peak effect neither directly through the pinning mechanisms of the condensation energy interaction nor indirectly with the aid of the order-disorder transition of flux lines. Other possible defects are nano-lamella structures. Although these defects do not directly contribute to the peak effect through the pinning mechanism of the condensation energy interaction, they may contribute to it with the aid of the order-disorder transition of flux lines. On the other hand, as Bi deteriorates with the addition of 211 particles, it is not determined by the flux pinning of 211 particles. The decrease in Bi is considered to be caused by the proximity effect of nano-lamella structures.
| Original language | English |
|---|---|
| Article number | 008 |
| Pages (from-to) | 345-350 |
| Number of pages | 6 |
| Journal | Superconductor Science and Technology |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2007 Apr 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Flux pinning properties of (Nd,Eu,Gd)Ba2Cu3O y (NEG-123) superconductor with 211 phase particles. / Hasan, Mohammed N.; Kiuchi, Masaru; Otabe, Edmund S.; Matsushita, Teruo; Miryala, Muralidhar.
In: Superconductor Science and Technology, Vol. 20, No. 4, 008, 01.04.2007, p. 345-350.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Flux pinning properties of (Nd,Eu,Gd)Ba2Cu3O y (NEG-123) superconductor with 211 phase particles
AU - Hasan, Mohammed N.
AU - Kiuchi, Masaru
AU - Otabe, Edmund S.
AU - Matsushita, Teruo
AU - Miryala, Muralidhar
PY - 2007/4/1
Y1 - 2007/4/1
N2 - Flux pinning properties were investigated by focusing on the origin of the high peak critical current density and the high irreversibility field for Nd0.33Eu0.38Gd0.28Ba2Cu 3Oy (NEG-123) bulk superconductors with the addition of 211 secondary phase particles of volume fractions up to 10mol%. It was found that a negative correlation exists between the peak critical current density Jcp and the irreversibility field Bi for various fractions of added 211 phase. This suggests that the mechanisms that determine J cp and Bi are different. The 211 particles do not contribute to the peak effect neither directly through the pinning mechanisms of the condensation energy interaction nor indirectly with the aid of the order-disorder transition of flux lines. Other possible defects are nano-lamella structures. Although these defects do not directly contribute to the peak effect through the pinning mechanism of the condensation energy interaction, they may contribute to it with the aid of the order-disorder transition of flux lines. On the other hand, as Bi deteriorates with the addition of 211 particles, it is not determined by the flux pinning of 211 particles. The decrease in Bi is considered to be caused by the proximity effect of nano-lamella structures.
AB - Flux pinning properties were investigated by focusing on the origin of the high peak critical current density and the high irreversibility field for Nd0.33Eu0.38Gd0.28Ba2Cu 3Oy (NEG-123) bulk superconductors with the addition of 211 secondary phase particles of volume fractions up to 10mol%. It was found that a negative correlation exists between the peak critical current density Jcp and the irreversibility field Bi for various fractions of added 211 phase. This suggests that the mechanisms that determine J cp and Bi are different. The 211 particles do not contribute to the peak effect neither directly through the pinning mechanisms of the condensation energy interaction nor indirectly with the aid of the order-disorder transition of flux lines. Other possible defects are nano-lamella structures. Although these defects do not directly contribute to the peak effect through the pinning mechanism of the condensation energy interaction, they may contribute to it with the aid of the order-disorder transition of flux lines. On the other hand, as Bi deteriorates with the addition of 211 particles, it is not determined by the flux pinning of 211 particles. The decrease in Bi is considered to be caused by the proximity effect of nano-lamella structures.
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UR - http://www.scopus.com/inward/citedby.url?scp=34249029994&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/20/4/008
DO - 10.1088/0953-2048/20/4/008
M3 - Article
VL - 20
SP - 345
EP - 350
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 4
M1 - 008
ER -