AC Susceptibility and Superconducting Properties of Graphene Added YBa2Cu3O7−d

Kong Wei, Kong Ing, M. S. Hamdan, Shahidan Radiman, Roslan Abd. Shukor

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The effect of graphene (G) addition on YBa2Cu3O7−δ(G)x (x = 0 − 0.03 wt%) has been studied using the X-ray diffraction method, scanning electron microscopy, electrical resistance versus temperature, transport critical current density Jc, and AC susceptibility measurements. XRD patterns showed single-phase YBa2Cu3O7−δ (YBCO) for all samples. SEM micrographs showed filling of the voids between YBa2Cu3O7−δ grains as graphene was added. The temperature-dependent electrical resistance curves showed metallic normal state behavior and onset transition temperature Tconset between 90 and 92 K for all samples. AC susceptibility measurement showed transition temperature (Formula presented.) between 90 and 93 K. (Formula presented.) was maintained or improved slightly as graphene was added. The x = 0.001 wt% showed the highest Jc, i.e., 2750 A cm−2 at 77 K and 5570 mA cm−2 at 30 K which was 13 and 40 times higher than that of the non-added YBCO, respectively. The peak temperature Tp of the imaginary part of the susceptibility χ was around 78–82 K for all samples indicating grain coupling was not weakened as graphene was added.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Superconductivity and Novel Magnetism
DOIs
Publication statusAccepted/In press - 4 Jan 2018

Fingerprint

Graphite
Graphene
alternating current
graphene
magnetic permeability
Acoustic impedance
electrical resistance
Superconducting transition temperature
transition temperature
Scanning electron microscopy
scanning electron microscopy
Temperature
temperature
voids
critical current
current density
X ray diffraction
barium copper yttrium oxide
curves
diffraction

Keywords

  • AC susceptibility
  • Current density
  • Graphene
  • YBCO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

AC Susceptibility and Superconducting Properties of Graphene Added YBa2Cu3O7−d . / Wei, Kong; Ing, Kong; Hamdan, M. S.; Radiman, Shahidan; Abd. Shukor, Roslan.

In: Journal of Superconductivity and Novel Magnetism, 04.01.2018, p. 1-5.

Research output: Contribution to journalArticle

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