E-J characteristics and n value of melt-textured REBa2Cu3Ox; (RE

Nd, Y)

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Melt-textured NdBa2Cu3Ox, (Ndl23) exhibits the secondary peak effect on the magnetic field dependence of the critical current density (Jc), which is attributed to the field-induced pinning. The electric field (E)-the current density (J) characteristics will be affected by the field-induced pinning. With the aim of clarifying this effect, we have investigated the E-J characteristics for melt-textured Nd123 with the secondary peak and Yba2Cu3Ox (Y123) with smaller secondary peak through dc magnetization and ac susceptibility. The n value was estimated on the assumption that E follows the power law: E = Ec(J/Jc)n. The n value was about 30 at 77 K for Y123. In the case of Nd123, the peak structure was observed on the magnetic field dependence of the n value, which exceeded 60 at 77 K. This suggests that the n value is increased by the field-induced pinning.

Original languageEnglish
Pages (from-to)3109-3112
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 III
DOIs
Publication statusPublished - 2003 Jun
Externally publishedYes

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Magnetic fields
Magnetization
Current density
Electric fields
current density
magnetic fields
critical current
magnetic permeability
magnetization
electric fields

Keywords

  • E-J characteristics
  • Field-induced pinning
  • N value
  • Nd123
  • Secondary peak

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

E-J characteristics and n value of melt-textured REBa2Cu3Ox; (RE : Nd, Y). / Inoue, Kazuo; Sakai, Naomichi; Murakami, Masato.

In: IEEE Transactions on Applied Superconductivity, Vol. 13, No. 2 III, 06.2003, p. 3109-3112.

Research output: Contribution to journalArticle

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