Enhanced critical current density of FeF 2 added YBa 2Cu 3O 7-δ

Roslan Abd. Shukor, I. Kong, E. L. Lim, N. A. Mizan, Hasan Adli Alwi, Mohammad Hafizuddin Jumali, W. Kong

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The effect of nanosized FeF 2 (∼120 nm) addition on the critical current density, J c, of YBa 2Cu 3O 7-δ was studied. YBa2Cu3O7 δ superconductor was prepared by the solid-state reaction method with addition of 0 to 0.10 wt% FeF2 additions. The magnetization critical current density, J cm (at 77 K), was estimated from the extended Bean model by using vibrating sample magnetometer (VSM) measurements. The transport critical current density, J ct, was measured using the four-point probe method with the 1 μV/cm criterion. The onset transition temperature, T c- onset showed a maximal value at 92 K for 0 to 0.03 wt% additions. J c increased with FeF2 addition up to 0.03 wt%. Addition of FeF2 of more than 0.03 wt% suppressed T c- onset and J c. The inter-grain current density was enhanced by two orders of magnitude on 0.03 wt% FeF2 addition. In addition to the condensation energy associated with their core, the full vortex magnetic energy by addition of nanosized FeF2 enhanced J c in the system.

Original languageEnglish
Pages (from-to)957-960
Number of pages4
JournalJournal of Superconductivity and Novel Magnetism
Volume25
Issue number4
DOIs
Publication statusPublished - May 2012

Fingerprint

Magnetometers
Solid state reactions
Superconducting materials
Superconducting transition temperature
Condensation
Magnetization
critical current
Vortex flow
Current density
current density
barium copper yttrium oxide
magnetometers
condensation
transition temperature
vortices
solid state
magnetization
energy

Keywords

  • Condensation energy
  • Critical current density
  • Flux pinning
  • Full vortex magnetic energy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Enhanced critical current density of FeF 2 added YBa 2Cu 3O 7-δ . / Abd. Shukor, Roslan; Kong, I.; Lim, E. L.; Mizan, N. A.; Alwi, Hasan Adli; Jumali, Mohammad Hafizuddin; Kong, W.

In: Journal of Superconductivity and Novel Magnetism, Vol. 25, No. 4, 05.2012, p. 957-960.

Research output: Contribution to journalArticle

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