Synthesis of high purity Tl1212 superconductor with ultrafine grains from coprecipitated Tl-free precursor route

Faizah Md Salleh, A. K. Yahya, Mohammad Hafizuddin Jumali, Z. Awang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this study, high purity and fine-grained Tl1212 superconductor samples were successfully synthesized from Tl 0.8 Bi 0.2Sr 2Ca 0.8Y 0.2 Cu 2O 7 starting composition by a two-step solid-state reaction method using Tl-free precursor powder prepared from coprecipitation method. XRD pattern of the sample, which was sintered at 1,000 °C for 6 min essentially showed formation of high purity 1212 phase. The sample's zero resistance critical temperature, T czero was 91 K and bulk critical current density, J c measured at 40 K in zero magnetic field was 11.2 A/cm 2. SEM investigation on the sample revealed ultrafine homogeneous grains that are randomly orientated with grain sizes of approximately 0.5-1 μm. Resintering the sample did not affect its superconducting properties but induced clustering of grains as observed by SEM. It is suggested that the sample be used in specialized measurement techniques such as in ultrasonic studies where high purity and ultrafine-grained samples are required.

Original languageEnglish
Pages (from-to)843-846
Number of pages4
JournalJournal of Materials Science: Materials in Electronics
Volume18
Issue number8
DOIs
Publication statusPublished - Aug 2007

Fingerprint

Superconducting materials
purity
routes
Scanning electron microscopy
synthesis
Coprecipitation
Solid state reactions
Powders
Ultrasonics
Magnetic fields
Chemical analysis
scanning electron microscopy
Temperature
Ultrafine
critical current
critical temperature
ultrasonics
grain size
current density
solid state

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Synthesis of high purity Tl1212 superconductor with ultrafine grains from coprecipitated Tl-free precursor route. / Salleh, Faizah Md; Yahya, A. K.; Jumali, Mohammad Hafizuddin; Awang, Z.

In: Journal of Materials Science: Materials in Electronics, Vol. 18, No. 8, 08.2007, p. 843-846.

Research output: Contribution to journalArticle

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