Flux pinning properties of (Nd,Eu,Gd)Ba2Cu3O y (NEG-123) superconductor with 211 phase particles

Mohammed N. Hasan, Masaru Kiuchi, Edmund S. Otabe, Teruo Matsushita, Muralidhar Miryala

Research output: Contribution to journalArticle

20 Citations (Scopus)

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 languageEnglish
Article number008
Pages (from-to)345-350
Number of pages6
JournalSuperconductor Science and Technology
Volume20
Issue number4
DOIs
Publication statusPublished - 2007 Apr 1
Externally publishedYes

Fingerprint

Flux pinning
Order disorder transitions
flux pinning
Superconducting materials
Condensation
Fluxes
Defects
lamella
Volume fraction
critical current
condensation
disorders
current density
defects
interactions
energy

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 journalArticle

Hasan, Mohammed N. ; Kiuchi, Masaru ; Otabe, Edmund S. ; Matsushita, Teruo ; Miryala, Muralidhar. / Flux pinning properties of (Nd,Eu,Gd)Ba2Cu3O y (NEG-123) superconductor with 211 phase particles. In: Superconductor Science and Technology. 2007 ; Vol. 20, No. 4. pp. 345-350.
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