Effect of nano-sized oxalate precursor on the formation ofGdBa 2Cu3O7-δ Phase via coprecipitation method

I. Hamadneh, A. M. Ahmad, M. H. Wahid, Z. Zainal, Roslan Abd. Shukor

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The formation of GdBa2Cu3O7-δ (Gd123) from metal oxalate precursor with average grain size less than 40 nm using the coprecipitation method is reported. The coprecipitated powders were heated at 900°C for 12 hours, pelletized and then sintered at 920°C for 15, 20 and 25 hours, respectively. All samples showed a dominant Gd123 phase with the orthorhombic structure. The amount of impurity phase Gd 2BaCuO5 (Gd211) can be controlled by varying the sintering time. This work shows that nano-sized oxalate powders produced via coprecipitation method can be an effective technique to synthesize high quality GdBa2Cu3O7-δ samples where the amount of (Gd211) can be controlled by varying the sintering duration. The percentage of Gd211 impurity decreased with increase in sintering time. This result is useful in utilizing the Gd211 phase as pinning center in enhancing the transport properties.

Original languageEnglish
Pages (from-to)2063-2068
Number of pages6
JournalModern Physics Letters B
Volume23
Issue number16
DOIs
Publication statusPublished - 30 Jun 2009

Fingerprint

oxalates
sintering
impurities
transport properties
grain size
metals

Keywords

  • Electrical properties
  • Nano-sized oxalate
  • Phase formation
  • Pinning centers

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics

Cite this

Effect of nano-sized oxalate precursor on the formation ofGdBa 2Cu3O7-δ Phase via coprecipitation method. / Hamadneh, I.; Ahmad, A. M.; Wahid, M. H.; Zainal, Z.; Abd. Shukor, Roslan.

In: Modern Physics Letters B, Vol. 23, No. 16, 30.06.2009, p. 2063-2068.

Research output: Contribution to journalArticle

Hamadneh, I. ; Ahmad, A. M. ; Wahid, M. H. ; Zainal, Z. ; Abd. Shukor, Roslan. / Effect of nano-sized oxalate precursor on the formation ofGdBa 2Cu3O7-δ Phase via coprecipitation method. In: Modern Physics Letters B. 2009 ; Vol. 23, No. 16. pp. 2063-2068.
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