Study of superconducting properties of oxygen deficient GdBa2Cu3O7-y by a heating cycle technique

Herng-Er Horng, J. C. Jao, M. H. Hsieh, Hong-Chang Yang, B. C. Yao, C. H. Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have studied oxygen deficient GdBa2Cu3O7-y samples by heating cycle technique and correlated the resistivity data with the oxygen deficiency derived from TGA. An orthorthombic to tetragonal phase transformation was found at about 720 K and it is consistent with that derived from the X-ray data. The resistivity is hysteretic cooling and shows semiconducting behavior for y≥0.7. Localization was found for samples with semiconductive properties. The electron-phonon coupling constant derived from the electric and magnetic measurements is λtr=0.31 which suggests a weak electron-phonon coupling in high-Tc oxides.

Original languageEnglish
Pages (from-to)480-484
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume158
Issue number3
DOIs
Publication statusPublished - 1989 May 1

Fingerprint

Electric variables measurement
Oxygen
Heating
cycles
electrical resistivity
heating
Electrons
hypoxia
Magnetic variables measurement
oxygen
Oxides
magnetic measurement
phase transformations
electrons
Phase transitions
Cooling
cooling
X rays
oxides
x rays

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Study of superconducting properties of oxygen deficient GdBa2Cu3O7-y by a heating cycle technique. / Horng, Herng-Er; Jao, J. C.; Hsieh, M. H.; Yang, Hong-Chang; Yao, B. C.; Chen, C. H.

In: Physica C: Superconductivity and its applications, Vol. 158, No. 3, 01.05.1989, p. 480-484.

Research output: Contribution to journalArticle

Horng, Herng-Er ; Jao, J. C. ; Hsieh, M. H. ; Yang, Hong-Chang ; Yao, B. C. ; Chen, C. H. / Study of superconducting properties of oxygen deficient GdBa2Cu3O7-y by a heating cycle technique. In: Physica C: Superconductivity and its applications. 1989 ; Vol. 158, No. 3. pp. 480-484.
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